Walter Huff has a good steady job in the insurance business and leads a quiet life. Then he meets and falls in love with Phyllis, an unhappily married woman, enquiring about accident insurance for her husband. They come up with a plan in which Phyllis's husband will die an unlikely death, by falling from a moving train. The 'accidental' nature of his demise will trigger the 'double indemnity' clause of the policy, forcing the insurance company to pay the widow twice the normal amount.
The couple carry out their plan but things soon turn sour. The Insurance Investigator is suspicious, and so are Phyllis's daughter, and her mysterious boyfriend Nino.

Adapted from James M Cain's novel, by Stef Penney

A BBC/Cymru Wales production, directed by Kate McAll. Show less