Opinion by
*443This appeal presents two questions: (1) is the writ of ne exeat1 available in Pennsylvania, and (2), if it is, do the instant facts warrant its issuance and continuance? The use of the writ of ne exeat is one of first impression in an appellate court in this Commonwealth.
Elkay Steel Co., appellee, instituted an equity action against M. Dennis Collins, appellant, and Rena R. Collins, his wife, wherein it was alleged that the Collins, by false and fraudulent representations and by forgeries, had secured from Elkay $91,015, a part of which — approximately $30,850 — the Collins had returned, but the balance of which — approximately $60,-165 and the profits realized therefrom — the Collins still retained. Elkay sought the aid of the equity court for an accounting and payment over to it of the balance of the money by .the Collins. That action is still pending.
Coincident with the institution of this equity action,2 Elkay petitioned for the issuance of a writ of. ne exeat alleging: (1) that the Collins’ activities had been and were such that upon service upon them of the complaint in the equity action the- Collins would leave Pennsylvania and the jurisdiction of its courts to avoid compliance with any decree rendered in the equity action; (2) that unless the Collins were required to post a bond conditioned on their continued presence in Pennsylvania, any decree which might be rendered in the equity action would be rendered non-effective by *444their departure from the Commonwealth; (3) that unless prevented by the issuance of the writ, the Collins’ misappropriation of Elkay’s money would be finally consummated. The Court below, ex parte, directed the issuance of a writ of ne exeat.3
The Collins filed preliminary objections to the equity complaint and an answer to the ne exeat petition. They then filed petitions to quash the writ. After hearing, the court below refused to quash the writ. Appellant then withdrew his preliminary objections and consented in writing to the entry of a default decree against him in the equity action. Elkay, however, did not enter a default decree. Appellant then presented another petition to quash the writ of ne exeat which the court below refused. Appellant then took this appeal.
The writ of ne exeat originated in England and, as appellant well states, applied “only to ecclesiastics, whose intercourse with the papacy it was designed to impede”; it was employed by the Crown to restrain and prevent the departure from the realm of such persons, whether subjects or foreigners. “Its use subsequently was sometime between the reigns of John and Edward *445I, as a high, prerogative writ, founded on the duty of the subject to defend the king and his realm. ... Its original use, however, as a prerogative writ was applied only ‘to great political objects and purposes of State for the safety or benefit of the realm’: 3 Story on Equity Jurisprudence, sec. 1913”.4 There were two forms of the writ, one applicable to clergymen, the other to laymen. Lord Coke deemed it part of the Crown’s prerogative at common law, not dependent on statute, “pro bono regis et regni”: 2 Co. Inst. 51.5
In the late sixteenth century, the practice arose of using ne exeat for the enforcement of private rights. The use of the writ in aid of private persons supposedly arose from custom: Ex Parte Brunker, 3 P. Wms. 313, 24 Eng. Rep. 1079. In Flack v. Holm, 1 Jac. & Walk. 405, 413, 414, Lord Eldon said, “How it happened that this great prerogative writ, intended by the laws for great political purposes and the safety of the country, came to be applied between subject and subject, I cannot conjecture”; nevertheless he concluded that “the law is settled, that in the case of an equitable demand, when the person against whom it is made is going out of the Kingdom, you may, by the King’s writ of ne exeat regno, prevent him from going, the object being to oblige him to give security to abide the decree”. The use of this writ in private litigation has *446received recognition both in Englánd6 and the United States.7
The writ’s function in private litigation was well stated in Andersen v. Andersen, 315 Ill. App. 380, 43 N.E. 2d 176, 179: “In American practice the writ of ne exeat república is a process in chancery and in aid of the chancery jurisdiction of the court, issued upon cause shown, to restrain a party from leaving the State until bail be given to perform the decree of the court. Where not otherwise provided by statute, it is governed by the same principles that apply in England to the writ of ne exeat regno ...” The writ confines a person to the limits of the jurisdiction of the court until he has satisfied the plaintiffs claim or given bond *447for the satisfaction of tbe decree of the court: 38 Am. Jur., Ne Exeat, §1. See also: Johnson v. Clendenin, 5 Gill & J. 463 (Md.); 20 Standard Encyclopaedia of Procedure, p. 291.
However, the courts have placed certain definite limitations upon the use or employment of the writ.8 The claim or demand must be equitable in nature as opposed to a claim or demand based upon contract and actionable at law,9 but to this rule there are two exceptions: (1) to prevent a husband’s threatened departure from the jurisdiction with the intent to evade payment of an alimony decree10 and (2) where equity will entertain a bill for an account the writ is available if the defendant admits that a balance is due but disputes the amount of the balance.11 The claim must be for a sum certain which is presently payable.12 It must be shown that there is “a probable or threatened departure of the defendant from the state or the coun*448try generally with intent to evade jurisdiction”.13 Lastly, since the writ does act as a restraint on the individual against whom it is issued, it should be granted only in circumstances which clearly warrant it and only with great caution.14
Although the use of the writ in early Pennsylvania was “frequent”,15 rarely in modern practice has it been employed.16 There are only two reported cases involving the writ of ne exeat in Pennsylvania, both of which have been well analyzed in Lit Brothers v. Rubin, supra, p. 113: “In Torladé v. Barrozo, 1 Miles (Pa.) 366 (1830) (District Court of Philadelphia), plaintiff, claiming to be the accredited représentative of the King of Portugal, applied for the writ of ne exeat to prevent defendant’s departure from the United States with archives and documents belonging to his majesty. The court discharged defendant on the ground of his privileges and immunity as charge d’affaires of a foreign government. The note in the case states that later Chief Justice Marshall granted the writ, but defendant had already left the jurisdiction. The other case is Dransfield v. Dransfield, 6 Phila. 143 (1866). The opinion begins by saying: ‘This case was a remarkable one, inasmuch as it was the first instance of the issuing of a writ of ne exeat by a Pennsylvania Court.’ The issuance of the writ was sustained to prevent the de*449fendant from departing the jurisdiction with securities belonging to plaintiff, his wife. The conrt proceeds on the theory of equitable indebtedness of the husband to the wife”. Our recent Rules of Civil Procedure recognize, at least by implication, the present availability of the writ.17
Appellant’s attack on the availability of the writ is two-fold: that it is in conflict with the Act of July 12, 1842, P. L. 339, §1,18 and with Art. I, §25 of the Pennsylvania Constitution.
The Act of 1842, supra, provides: “No person shall be arrested or imprisoned on any civil process issuing out of any court of this commonwealth, in any suit or proceeding instituted for the recovery of any money due upon any judgment or decree founded upon contract, or due upon any contract, express or implied, or for the recovery of any damages for the nonperformance of any contract, excepting in proceeding as for contempt, to enforce civil remedies, action for fines or penalties, or on promises to marry, on moneys collected by any public officer, or for any misconduct or neglect in office, or in any professional employment, in which cases the remedies shall remain as heretofore”. (Emphasis supplied) The main object of this statute was to relieve from imprisonment in all cases where the offense was that of omitting to pay money due on a contract: Commonwealth ex rel. Di Giacomo v. Heston, 292 Pa. 63, 68, 140 A. 533; Ross v. Dever, *450298 Pa. 146, 151, 148 A. 75. Tlie statutory language clearly supports this interpretation. If tlie equity proceeding to which the writ of ne exeat is ancillary seeks the recovery of money due not on a contractual basis but upon the basis of fraud or a trust relationship, then the statute is not applicable. Allen et al. v. Pennypacker et al., 302 Pa. 495, 498, 153 A. 734. Other jurisdictions have recognized that detention under a writ of ne exeat ancillary to an equity proceeding which is based on fraud or the breach of a legal duty rather than on a contract, express or implied, does not constitute an unlawful imprisonment for debt: Gooding v. Reid, Murdock & Co., 177 F. 684; Bushnell v. Bushnell, 15 Barb. (N. Y.) 399; McNamara v. Dwyer, 7 Paige (N. Y.) 239; Brown v. Haff, 5 Paige (N. Y.) 235; Dean v. Smith, 23 Wis. 483; Ruddell v. Childress, 31 Ark. 511; Porteus v. Barton, 16 Colo. 75; Gleason v. Bisby, (N. Y.) Clarke, p. 551; 16 C.J.S., Constitutional Law, §204(3); 65 C.J.S., Ne Exeat, §2. Contra: Scoggins v. Taylor, 13 Ark. 380; Malcolm v. Andrews, 68 Ill. 100; Adams v. Whitcomb, 46 Vt. 708. See also: Tegtmeyer v. Tegtmeyer, 314 Ill. App. 16, 40 N.E. 2d 767, cert. den. 317 U. S. 689, 87 L. Ed. 552, 63 S. Ct. 257, reh. den. 322 U. S. 771, 88 L. Ed. 1596, 64 S. Ct. 1272. Where ne exeat issues ancillary to an equity action, as in the instant case wherein the claim is based on fraud rather than contract, it does not run afoul of the statutory prohibition against imprisonment for debt.
Art. I, §25 of the Pennsylvania Constitution provides: “Emigration from the State shall not be prohibited”. Appellant’s argument that the use of ne exeat violates this constitutional provision is without merit. This provision proscribed any legislative mandate denying the “natural inherent right to emigrate from one state to another that will receive them or to *451form a new state in vacant countries or in sucb countries as they can purchase whenever they think that thereby they may promote their own happiness”.19 The constitutional provision does not, nor was it ever intended to, prohibit the restraint of individuals within the Commonwealth who, either civilly or criminally, commit acts of fraudulent transgression until they have answered for such transgressions. Numerous restraints of this nature have been validated in this state as vital and necessary parts of the administration of justice.20 The restraint of an individual which results from the issuance of ne exeat is not among the constitutional prohibitions.
Assuming, arguendo, the availability of the writ, appellant contends that the instant facts neither warrant the issuance, nor the continuance of the writ, particularly since appellant has consented to the entry of a default decree against him. In reviewing the action of the court below we do not inquire into the merits of the controversy, but simply determine whether the court below had reasonable grounds upon which to grant and continue the writ or whether palpable legal error exists. An examination of the record reveals the propriety of the action of the court below. Appellee’s basis for the issuance of the writ was the imminency of an actual departure from the Commonwealth of the Collins for the purpose of avoiding compliance with the eventual decree in the equity action; the record fully justifies the conclusion that such a threat existed. Furthermore, appellant’s willingness to suffer a default judgment did not justify the discharge of the *452writ.21 To hold otherwise would permit a fraudulent debtor to admit his guilt and then depart from the jurisdiction of the court with the fruits of his fraud, the very object which ne exeat seeks to prevent.
While there is no doubt that the writ of ne exeat is presently available for use in private litigation its use and employment must be carefully circumscribed within appropriate limits and its issuance exercised with great caution and only in such instances where it clearly and unmistakably applies.22 In the present circumstances the court below very properly permitted both the issuance of the writ and its continuance.
Order affirmed. Costs upon appellant.
Mr. Justice Bell and Mr. Justice Cohen dissent.