
905 P.2d 928 (1995)
79 Wash.App. 850
Clyde FONDREN and Jennifer Fondren, husband and wife, Appellants/Cross-Respondents,
v.
KLICKITAT COUNTY; the Klickitat County Sheriff's Office; Elmer Kinder; and Richard McComas, Respondents/Petitioners.
No. 13660-4-III.
Court of Appeals of Washington, Division 3, Panel Two.
November 21, 1995.
*929 Timothy K. Ford, MacDonald, Hoague & Bayless, Seattle, for Appellants.
David Utevsky, Foster, Pepper & Shefelman, Seattle, for Respondents.
THOMPSON, Chief Judge.
Clyde and Jennifer Fondren appeal the dismissal of most of their claims, which arise from the investigation of a fatal shooting for which Mr. Fondren was first convicted, then acquitted on retrial after remand from this Court. The Defendants were granted review of the Superior Court's refusal to dismiss the Fondrens' remaining claim. We find merit in both arguments. We therefore remand for further proceedings on the Fondrens' allegations of malicious prosecution, false arrest, false imprisonment, civil rights violation, outrage, and defamation. We dismiss the Fondrens' claim based on negligent investigation.
On September 25, 1982, a man was shot and killed during an altercation near the Fondrens' home in rural Klickitat County.[1]*930 Mr. Fondren was arrested, charged, and tried for second-degree murder. The Fondrens' complaint alleges there was no probable cause for the arrest and prosecution, and sheriff's deputies mishandled the investigation and "failed to fully and truthfully convey all relevant facts [they] knew, or should have known."
Mr. Fondren's first trial resulted in a conviction for second-degree manslaughter. This Court reversed the conviction, holding the trial court's instructions had failed clearly to inform jurors the State had the burden of proving the absence of self-defense beyond a reasonable doubt. State v. Fondren, 41 Wash.App. 17, 18, 701 P.2d 810, review denied, 104 Wash.2d 1015 (1985). After a second trial, a jury acquitted Mr. Fondren, finding in a special verdict that he had acted in defense of himself or another.
The Fondrens then filed this action, containing the following claims: (1) civil rights violations under 42 U.S.C. § 1983; (2) malicious prosecution; (3) negligence; (4) infliction of emotional distress; (5) defamation; (6) false arrest and imprisonment; and (7) outrage. After the decision in Hanson v. Snohomish, 121 Wash.2d 552, 852 P.2d 295 (1993), the Defendants moved for judgment on the pleadings, arguing the Fondrens' complaint fails to state a claim upon which relief can be granted. See CR 12(b)(6); CR 12(c). Applying Hanson, the Superior Court dismissed all of the Fondrens' claims except negligence, which it treated as a claim for negligent investigation. The Fondrens appealed, and this Court granted discretionary review of the refusal to dismiss the negligence claim.
This case arises from a motion to dismiss the Fondrens' claims for "failure to state a claim upon which relief can be granted" under CR 12(b)(6). On appeal, the Superior Court's ruling on such a motion is a question of law, and is reviewed de novo. Hoffer v. State, 110 Wash.2d 415, 420, 755 P.2d 781 (1988), aff'd on reh'g, 113 Wash.2d 148, 776 P.2d 963 (1989).
To prevail on a CR 12(b)(6) motion, a defendant has the burden of establishing "beyond doubt that the plaintiff can prove no set of facts, consistent with the complaint, which would entitle the plaintiff to relief." Corrigal v. Ball & Dodd Funeral Home, Inc., 89 Wash.2d 959, 961, 577 P.2d 580 (1978) (citing Halvorson v. Dahl, 89 Wash.2d 673, 674, 574 P.2d 1190 (1978); Berge v. Gorton, 88 Wash.2d 756, 759, 567 P.2d 187 (1977)); Hoffer, 113 Wash.2d at 153, 776 P.2d 963. The motion should be granted "sparingly and with caution in order to make certain that plaintiff is not improperly denied a right to have his claim adjudicated on the merits." 5A Charles A. Wright & Arthur R. Miller, Federal Practice and Procedure § 1349, at 192-93 (2d ed. 1990); see Orwick v. Seattle, 103 Wash.2d 249, 254, 692 P.2d 793 (1984). Usually, dismissal is granted under this rule "only in the unusual case in which plaintiff includes allegations that show on the face of the complaint that there is some insuperable bar to relief." 5A Wright & Miller § 1357, at 344; see Hoffer, 110 Wash.2d at 420, 755 P.2d 781. The motion should be denied if the plaintiff can assert any hypothetical factual scenario that gives rise to a valid claim, even if the facts are alleged informally for the first time on appeal. Bravo v. Dolsen Cos., 125 Wash.2d 745, 750, 888 P.2d 147 (1995).
The Defendants moved to dismiss the Fondrens' complaint in response to the Supreme Court's decision in Hanson. In that case, Mr. Hanson was convicted of first-degree assault. Hanson, 121 Wash.2d at 554, 852 P.2d 295. The appellate court reversed the conviction, holding the trial court had erred in admitting fiction written by Mr. Hanson. Hanson, 121 Wash.2d at 555, 852 P.2d 295. Mr. Hanson was acquitted on remand. Hanson, 121 Wash.2d at 555, 852 P.2d 295. He filed a civil action, claiming malicious prosecution, false arrest and imprisonment, negligent investigation, defamation, and civil rights violations. Hanson, 121 Wash.2d at 555, 852 P.2d 295. The trial court in the civil action denied summary judgment on the defamation claim, and Mr. Hanson later abandoned his negligent investigation claim. Hanson, 121 Wash.2d at 555 n. 3, 852 P.2d *931 295. However, the trial court dismissed the remaining claims, holding collateral estoppel barred relitigation of the issues. Hanson, 121 Wash.2d at 555, 852 P.2d 295. The appellate court reversed, holding collateral estoppel did not apply. Hanson v. Snohomish, 65 Wash.App. 441, 828 P.2d 1133 (1992), rev'd, 121 Wash.2d 552, 852 P.2d 295 (1993).
The Supreme Court held "that a conviction, although later reversed, is conclusive evidence of probable cause, unless that conviction was obtained by fraud, perjury or other corrupt means, or, of course, unless the ground for reversal was absence of probable cause." Hanson, 121 Wash.2d at 560, 852 P.2d 295; see Restatement (Second) of Torts § 667(1) (1977). Because probable cause is a complete defense to claims for malicious prosecution, as well as false arrest and imprisonment, the court held those claims were barred unless Mr. Hanson could establish the conviction was obtained by fraud, perjury, or other corrupt means. Hanson, 121 Wash.2d at 560, 563-64, 852 P.2d 295. The court then addressed whether identification procedures in the criminal trial constituted fraud, perjury, or other corrupt means. Hanson, 121 Wash.2d at 560, 852 P.2d 295. Because those procedures were held to be proper, both in the trial court and on appeal of the original conviction, the Supreme Court held Mr. Hanson was barred by collateral estoppel from relitigating that issue. Hanson, 121 Wash.2d at 561-63, 852 P.2d 295. The Supreme Court thus affirmed the dismissal of the malicious prosecution and false arrest and imprisonment claims. Hanson, 121 Wash.2d at 563-64, 852 P.2d 295. Finally, the court affirmed the dismissal of Mr. Hanson's civil rights claim because it was predicated on the State claims. Hanson, 121 Wash.2d at 564, 852 P.2d 295.
The Fondrens first invite us to reconsider the rule in Hanson.[2] However, as a decision of the Washington Supreme Court, Hanson is binding on all lower courts in the state. See State v. Gore, 101 Wash.2d 481, 487, 681 P.2d 227 (1984). Whatever the merits of the Fondrens' argument in this regard, Hanson is binding precedent.
The precise issue raised here is whether, under Hanson, any or all of the Fondrens' claims are barred because Mr. Fondren's criminal conviction conclusively establishes the existence of probable cause.

Malicious prosecution, false arrest, and false imprisonment claims
Mr. Fondren's conviction conclusively establishes probable cause, unless the conviction was obtained by fraud, perjury, or other corrupt means. Hanson, 121 Wash.2d at 560, 852 P.2d 295. Because probable cause is a complete defense to claims for malicious prosecution, false arrest, and false imprisonment, these claims appear to be barred under Hanson.
However, the Fondrens argue Hanson does not apply in these circumstances. They first point out that Mr. Fondren was charged with second-degree murder, but convicted only of second-degree manslaughter. Although the conviction may establish probable cause for manslaughter, they argue, it does not establish probable cause for murder, the crime for which the Defendants charged and tried Mr. Fondren. However, probable cause exists when a person of reasonable caution is justified in believing "an offense has been or is being committed." State v. Gluck, 83 Wash.2d 424, 426-27, 518 P.2d 703 (1974) (emphasis added). Mr. Fondren's conviction on a lesser charge merely reflects the jurors' conclusion that the facts proved a different (but related) crime; it does not detract from their conclusion that some offense had been committed. The Fondrens also point out that in Hanson, the ground for reversal of the conviction was evidentiary error, while the error in Mr. Fondren's case was of constitutional magnitude.[3] This argument *932 belies the clarity of the Hanson rule, under which the conviction is conclusive evidence of probable cause. The rule's application does not depend on the severity of the error. This assignment of error is without merit.
The Fondrens next contend the Hanson rule does not apply because Mr. Fondren's conviction was obtained by fraud, perjury, or other corrupt means. The complaint alleges, among other things, that Defendant "Kinder and/or other agents of Klickitat County and the Klickitat County Sheriff's Office, ... failed to fully and truthfully convey all relevant facts he knew, or should have known." Arguably, this is an allegation of perjury, an explicit exception to the general Hanson rule.
The Fondrens also point out that the appeal of Mr. Fondren's conviction included claims of juror and prosecutorial misconduct, which this Court did not address in light of its reversal on other grounds. Fondren, 41 Wash.App. at 24-25, 701 P.2d 810. In Hanson, collateral estoppel applied because this issue was fully litigated, including on appeal. Hanson, 121 Wash.2d at 561-64, 852 P.2d 295; see State v. Hanson, 46 Wash.App. 656, 664-71, 731 P.2d 1140, review denied, 108 Wash.2d 1003 (1987). In Mr. Fondren's appeal, by contrast, the Court never reached the misconduct issues, and thus he did not have a "full and fair opportunity" to present his case on these questions. Hanson, 121 Wash.2d at 561, 852 P.2d 295.
The Defendants point out the Fondrens' complaint does not specifically allege fraud, perjury, or other corrupt means, and they argue the Fondrens bear the burden of establishing these facts. See Restatement (Second) of Torts § 667(1) cmt. c (1977). This argument ignores the procedural context here. The Fondrens should bear the burden at trial of proving fraud, perjury or other corrupt means, but for the purposes of this CR 12(b)(6) motion, the Defendants must show that no set of facts would entitle the Fondrens to the relief they seek. Hoffer, 113 Wash.2d at 153, 776 P.2d 963. While the complaint does not specifically allege fraud, perjury or other corrupt means,[4] the Fondrens' complaint and their brief on appeal have identified factual scenarios that may establish those facts. See Bravo, 125 Wash.2d at 750, 888 P.2d 147. The Defendants have not established an "insuperable bar to relief," 5A Charles A. Wright & Arthur R. Miller, Federal Practice and Procedure § 1357, at 344 (2nd ed. 1990), and the Fondrens' claims should not have been dismissed.

Civil rights claim
The parties vigorously dispute the applicability of Heck v. Humphrey, 512 U.S. ___, 114 S.Ct. 2364, 129 L.Ed.2d 383 (1994). In Heck, the plaintiff was serving a sentence on a manslaughter conviction in state court. Heck, ___ U.S. at ___, 114 S.Ct. at 2368. While his state appeal was pending, he filed a civil rights action, under 42 U.S.C. § 1983, in federal district court. Heck, ___ U.S. at *933 ___, 114 S.Ct. at 2368. His complaint requested only monetary damages, but the district court concluded the claim implicated the legality of the prisoner's confinement. The district court held the claim was cognizable only as a federal habeas corpus action under 28 U.S.C. § 2254. Unlike Section 1983 claims, federal habeas corpus actions require exhaustion of state remedies, so the district court dismissed the Section 1983 claim. Heck, ___ U.S. at___, 114 S.Ct. at 2368. Attempting to resolve a conflict at the "intersection" of these two federal statutes, the Supreme Court held:
[I]n order to recover damages for allegedly unconstitutional conviction or imprisonment, or for other harm caused by actions whose unlawfulness would render a conviction or sentence invalid, a § 1983 plaintiff must prove that the conviction or sentence has been reversed on direct appeal, expunged by executive order, declared invalid by a state tribunal authorized to make such determination, or called into question by a federal court's issuance of a writ of habeas corpus ...
Heck, ___ U.S. at ___ 114 S.Ct. at 2372 (footnote omitted). In reaching its conclusion, the Court analogized Section 1983 claims to common law malicious prosecution claims. Heck, ___ U.S. at ___ _ ___, 114 S.Ct. at 2371-72.
Concurring in the judgment, Justice Souter (joined by three other justices) objected to the analogy, pointing out that "[a] defendant's conviction, under Reconstruction-era common law, dissolved his claim for malicious prosecution because the conviction was regarded as irrebuttable evidence that the prosecution never lacked probable cause." Heck, ___ U.S. at ___ 114 S.Ct. at 2377 (Souter, J., concurring). Requiring a Section 1983 plaintiff to obtain a reversal, Justice Souter argued, would defeat the purpose of Section 1983, which was "enacted in part out of concern that many state courts were `in league with those who were bent upon abrogation of federally protected rights[.]'" Heck, ___ U.S. at ___, 114 S.Ct. at 2380 (Souter, J., concurring) (quoting Mitchum v. Foster, 407 U.S. 225, 240, 92 S.Ct. 2151, 2161, 32 L.Ed.2d 705 (1972)).
The limitation in Heck does not apply directly here. First, Mr. Fondren is not incarcerated and therefore is not subject to the federal habeas corpus exhaustion requirement. Second, Mr. Fondren's criminal conviction was reversed on direct appeal, and he has satisfied the Heck requirement even if it applied to him.
Nor is Heck a repudiation of the rule announced in Hanson. The Supreme Court in Heck never conclusively addressed the effects of a prior conviction on the question of probable cause. See Heck, ___ U.S. at ___ n. 4, 114 S.Ct. at 2371 n. 4. Moreover, Justice Souter's criticism of the "Reconstruction-era common law" rule failed to acknowledge "that there must be exceptions to the rule in cases involving circumstances such as fraud, perjury, or mistake of law." Heck, ___ U.S. at ___ n. 4, 114 S.Ct. at 2371 n. 4 (citations omitted). The question remains unresolved under federal law. Compare Cameron v. Fogarty, 806 F.2d 380, 386-88 (2d Cir.1986), cert. denied, 481 U.S. 1016, 107 S.Ct. 1894, 95 L.Ed.2d 501 (1987) (applying common law rule to Section 1983 claim) with Rose v. Bartle, 871 F.2d 331, 350-51 (3d Cir.1989) (questioning Cameron).
A separate question, however, is whether the Hanson rule applies to the Fondrens' federal civil rights claim. In Hanson, the plaintiff's Section 1983 claim was "predicated on [his] claim that he has a constitutional right to be free from malicious prosecution, false arrest, and false imprisonment...." Hanson, 121 Wash.2d at 564, 852 P.2d 295. Because these underlying claims were unsupported, the court reasoned, the federal claim also was properly dismissed.
However, "rights judicially protected under any part of the federal constitution can be safeguarded in § 1983 actions." Chester J. Antieau, Federal Civil Rights Acts: Civil Practice § 116, at 219 (2d ed. 1980). The Fondrens' complaint in this case alleges that "evidence favorable to plaintiff Clyde Fondren was not discovered, or was lost, destroyed, or rendered unusable." Arguably, this allegation supports a claim or claims involving Mr. Fondren's Fourth Amendment rights, unrelated to the malicious prosecution, false arrest, and false imprisonment *934 claims. See Reply Brief of Appellants, at 3-4.[5] Again, the Defendants have not shown an "insuperable bar to relief," 5A Wright & Miller § 1357, at 344, and the Section 1983 claim should not have been dismissed.

Defamation, outrage, and infliction of emotional distress claims
As a result of Hanson, any civil claim, depending in part on the lack of probable cause, is barred by a prior conviction unless an exception applies. However, Hanson does not bar a claim for which the lack of probable cause is not an element, or for which probable cause is not a complete defense. See Hanson, 121 Wash.2d at 558, 563, 852 P.2d 295. The question here, then, is whether (even assuming there are no applicable exceptions to Hanson, as is discussed supra) the presence of probable cause will bar the Fondrens' claims for defamation, outrage, and infliction of emotional distress.
The elements of a defamation claim are falsity, an unprivileged communication, fault, and damages. Commodore v. University Mechanical Contractors, Inc., 120 Wash.2d 120, 133, 839 P.2d 314 (1992). The elements of the tort of outrage are "(1) extreme and outrageous conduct; (2) intentional or reckless infliction of emotional distress; and (3) actual result to the plaintiff of severe emotional distress." Rice v. Janovich, 109 Wash.2d 48, 61, 742 P.2d 1230 (1987) (citing Restatement (Second) of Torts § 46 (1965); Grimsby v. Samson, 85 Wash.2d 52, 530 P.2d 291 (1975); Contreras v. Crown Zellerbach Corp., 88 Wash.2d 735, 565 P.2d 1173 (1977)). The Fondrens' claim for infliction of emotional distress (alleging "intentional and/or reckless" acts) apparently is the same as their claim for the tort of outrage. See Rice, 109 Wash.2d at 61, 742 P.2d 1230; cf. Corrigal v. Ball & Dodd Funeral Home, Inc., 89 Wash.2d 959, 962, 577 P.2d 580 (1978) (negligent infliction of emotional distress).
The lack of probable cause is not an element of either of these claims, nor does probable cause establish a complete defense. Therefore, Hanson has no effect on these claims, and they should not have been dismissed on this basis.
The Defendants argue, as a separate ground for dismissal of the defamation claim, that the Fondrens' complaint has not identified any false statements by the Defendants, nor have the Fondrens asserted any hypothetical factual scenario that gives rise to a claim for defamation. Although the Defendants' memorandum in support of dismissal briefly raised this question, the Superior Court's order made it clear that the dismissal was based solely on its decision regarding "Hanson's scope and application to this case." In light of our decision to remand the case for further proceedings, this issue properly should be considered at that time.

Negligence
The Fondrens agree their negligence allegation is a claim for negligent investigation. Reply Brief of Appellants, at 9-14. The Superior Court declined to dismiss this claim, noting: "I do not think that rises or falls on the existence of probable cause." The Defendants have cross-appealed this decision.
A claim for negligent investigation is not cognizable under Washington law. Donaldson v. Seattle, 65 Wash.App. 661, 671, 831 P.2d 1098 (1992), review dismissed, 120 Wash.2d 1031, 847 P.2d 481 (1993) (citing Dever v. Fowler, 63 Wash.App. 35, 44-45, 816 P.2d 1237 (1991), 824 P.2d 1237, review denied, 118 Wash.2d 1028, 828 P.2d 563 (1992)); Keates v. Vancouver, 73 Wash.App. 257, 267, 869 P.2d 88, review denied, 124 Wash.2d 1026, 883 P.2d 327 (1994) (citing Dever).
In Dever, 63 Wash.App. at 44-45, 816 P.2d 1237, the court affirmed the Superior Court's CR 12(b)(6) dismissal of a negligent investigation claim, in part on the basis that no such action exists in Washington. Similarly here, the Fondrens' negligent investigation claim should have been dismissed because the claim is not cognizable.
*935 We reverse the Superior Court's dismissal of the Fondrens' malicious prosecution, false arrest, false imprisonment, civil rights, outrage, and defamation claims, and remand for further proceedings. We also reverse the Superior Court's refusal to dismiss the Fondrens' negligent investigation claim, holding there is no such cause of action in Washington.
MUNSON and SWEENEY, JJ., concur.
NOTES
[1]  A complete summary of the events appears in this Court's decision in State v. Fondren, 41 Wash.App. 17, 19-20, 701 P.2d 810, review denied, 104 Wash.2d 1015 (1985). This appeal arises from a motion for judgment on the pleadings, arguing the Fondrens' complaint failed to state a claim upon which relief can be granted. See CR 12(b)(6); CR 12(c). In this procedural context, all allegations in the complaint are accepted as true, and no matter outside the pleadings may be considered. Corrigal v. Ball & Dodd Funeral Home, Inc., 89 Wash.2d 959, 961, 577 P.2d 580 (1978); Brown v. MacPherson's, Inc., 86 Wash.2d 293, 297, 545 P.2d 13 (1975). The factual summary here is based on the allegations contained in the Fondrens' complaint.
[2]  The Fondrens also argue the United States Supreme Court has rejected the Hanson rule. We address this argument in connection with our discussion of their civil rights claims, on pages 933-34.
[3]  The Fondrens attempt to argue that the constitutional error renders the conviction "void." As a practical matter, any reversal makes a criminal conviction "void." The Fondrens' reasoning would create an exception that would render Hanson meaningless.
[4]  The Defendants' brief cites several cases in support of their argument the complaint is insufficient. Most of the cases did not arise in the context of pretrial motions for judgment on the pleadings. See Marsh v. Commercial & Sav. Bank, 265 F.Supp. 614 (W.D.Va.1967) (summary judgment); Wisniski v. Ong, 94 Ariz. 123, 382 P.2d 233 (1963) (directed verdict for defendant); Alexander v. Laman, 225 Ark. 498, 283 S.W.2d 345 (1955) (directed verdict for defendant); House v. Ane, 56 Haw. 383, 538 P.2d 320 (1975) (dismissal at close of plaintiff's case); Arnold v. Jarvis, 367 Mich. 59, 116 N.W.2d 38 (1962) (directed verdict for defendant). One case reflected a rule requiring specific pleadings, which Washington no longer requires. See Stebbins v. Wilson, 122 Mont. 186, 199 P.2d 453, 455 (1948) (The law "requires a definite statement of specific facts constituting a wrong as a basis for judicial proceedings."); cf. CR 8(a) (pleadings must contain "a short and plain statement of the claim showing that the pleader is entitled to relief"). Another case held allegations of fraud must be specific. See Hoffman v. Hastings, 116 W.Va. 151, 178 S.E. 812 (1935); see CR 9(b). However, Hoffman did not reflect the Washington rule that, in a CR 12(b)(6) motion, the plaintiff may present hypothetical facts to support the claim, even on appeal. See Bravo, 125 Wash.2d at 750, 888 P.2d 147. In addition, "a failure to comply with many of the special pleading provisions in Rule 9 need not be remedied by a dismissal of the action or a striking of the pleading, but can be corrected through a motion for a more definite statement or the use of the discovery procedures." 5 Charles A. Wright & Arthur R. Miller, Federal Practice and Procedure § 1291, at 564 (2d ed. 1990).
[5]  The Defendants appear to agree that the civil rights claim would survive this motion if the claim were based on alleged "constitutional violations unrelated to the existence of probable cause...." See Brief of Respondents at 37.
