Chris Hunter kills an intruder and tells her husband and lawyer it was an act of self-defense. It's later revealed that he was actually her lover and she had posed for an incriminating statue he created.
The Unfaithful
A Los Angeles socialite kills a man while home alone one night and claims he was an intruder she did not know. It seems like a clear case of self defense until the story hits the papers and people connected to the dead man come forward.