Alfred Hitchcock Presents

Iris Teleton meets her husband's lover Blanche Herbert. Blanche asks that Iris give her husband a divorce. When Iris refuses, Blanche gives her a letter that proves that she was also cheating on her husband. Iris kills Blanche. Later, Iris meets with her husband Oliver and learns that he gave Blanche the letter. He also hired a detective who was following Iris. The detective can place Iris at the scene of Blanche's murder. Iris's husband agrees to keep quiet, but only if she will give him a divorce.