3. Blaming the Lawyer. Aoude’s argument that the district court unjustly visited the sins of counsel upon the client cannot withstand scrutiny. It may well be that there are cases where it would be inappropriate and a “deplorable kind of injustice” mechanically to hold litigants bound by every lawyerly misdeed, no matter how innocent the client or culpable the attorney. Link, 370 U.S. at 645, 82 S.Ct. at 1396 (Black, J., dissenting). But, here, by his own account, Aoude (not his lawyer) conceived the fraudulent scheme; Aoude (not his lawyer) introduced the apocryphal agreement into the discussions with defendant; Aoude gave the document to the lawyer and authorized the filing of the complaint, knowing that the fake agreement was appended to it. These facts, we believe, bring into play the doctrine in pari delicto. See, e.g., Pantely v. Garris, Garris & Garris, P.C., 180 Mich.App. 768, 447 N.W.2d 864, 868 (1989); cf. Montplaisir v. Leighton, 875 F.2d 1, 7-8 (1st Cir.1989); id. at 8 (Aldrich, J., concurring). There is not the slightest unfairness in holding plaintiff responsible for the bitter fruit of the scheme which he masterminded and in which he and his attorney jointly participated.
4. Leave to Amend. Under the Civil Rules, leave to amend a complaint “shall be freely given when justice so re-quires_” Fed.R.Civ.P. 15(a). In June 1988, some six months after suit was started, the district court refused to allow appellant to scrap the bogus agreement and append the true agreement to the complaint in its place. This denial of his motion to amend, Aoude says, constituted an abuse of discretion. His position is unsupportable.
It is settled that a district court may deny a motion to amend in cases of “undue delay, bad faith or dilatory motive on the part of the movant.” Foman v. Davis, 371 U.S. 178, 182, 83 S.Ct. 227, 230, 9 L.Ed.2d 222 (1962). Given the scurrilous course of conduct on which Aoude had embarked, Monahan’s unexpected revelation of the truth, and the pendency of defendants’ dismissal motions, it is hard to envision a clearer case of bad faith. We do not believe, as appellant would have it, that the lower court was limited to considering only bad faith in the making of the motion. Because leave to amend calls into play “the pertinent balance of equitable considerations,” Quaker State Oil Refining Corp. v. Garrity Oil Co., 884 F.2d 1510, 1517 (1st Cir.1989), common sense demands that the movant’s bad faith be viewed through a wider lens. Doing so here leaves no doubt but that the denial of the suggested amendment was warranted. See, e.g., Local 472, etc. v. Georgia Power Co., 684 F.2d 721, 724 (11th Cir.1982) (district court had discretion to deny motion to amend which was “nothing more than an effort to avoid an adverse summary judgment”); see also Fed.R.Civ.P. 15(a) (leave to amend “shall be freely given when justice so re-quires_”) (emphasis supplied).
5. The Second Suit. Appellant remonstrates that, whatever disposition may be made of his original suit, his second suit was filed without any reference to the bogus agreement and should not have been dismissed. The assertion will not wash. A malefactor, caught red-handed, cannot simply walk away from a case, pay a new docket fee, and begin afresh. History is not so glibly to be erased. Once a litigant chooses to practice fraud, that misconduct infects his cause of action, in whatever guises it may subsequently appear. Thus, to the extent that the two complaints paralleled each other, the second suit was, for the reasons already stated, appropriately jettisoned.
To be sure, plaintiff’s second complaint can be read to allege an additional cause of action for PMPA violations based