Lansdown (2001)

In the first scene of this dark comedy, defense lawyer Jake Jorgenson learns of his wife's infidelity when he hears her orgasmic escapades on an audio tape made by a former client. As Jake tries to reclaim the life he covets by killing his wife's lover, his carefully constructed life begins to unravel. His decision to ask the former client for help brings three amateur hitmen into the mix. Their "simple job" turns bad, raising the stakes for Jake and forcing him to take matters into his own hands...