Candidate for Murder - S3.E2

With his marriage failing, a man hires a german assassin to murder his wife, who he suspects is having an affair. Things seem to go to plan at first, until the assassin decides not to kill the woman, but rather kidnap her, while still collecting his fee for the job. The husband wants proof of the muder (a body) before he pays. Things go wrong for both men when proof is not forthcoming.