Immoral Wife (2005)
A wife thinks that all her sexual perversions and promiscuity is all behind her when she got married. But a friend of her husband who comes over for a drink will prove her wrong.
blackmailed wife
Trhauma (1980)
Among a group of friends, one husband blackmails the wife of another for having some lesbian action with his own wife.
Dial M for Murder (1954) – Alfred Hitchcock
A husband plans a perfect murder for his cheating wife.