A novelist, Michael Cornforth (Griffin Jones) goes to bed in London and wakes up with a gun in his hand in his cousin's country cottage. Walking around, he finds his cousin in a kitchen closet.
Two women appear at the door, soaked from the rain, asking to come in. One of the women goes into the kitchen for tea and drops something on the floor. Looking for a broom, she finds the body, screams, and faints.
Michael attempts to explain the situation to Jean Gilson (Patricia Laffan). For some reason, she believes him. This is a major hole in the story - there is no explanation for her behavior.
Michael's investigation, with the help of Jean and a friend, reporter Bill Dodd (Bruce Seton), puts him on the trail of his cousin's wife, who supposedly is in Australia. Since Michael is in line to inherit, and since someone is trying to frame him, this is perhaps about money.
These B noirs were part of a quota system in British film. It's not bad; in fact, there are some fun scenes. There's a neat twist, actually a double twist, at the end.