[3] Scotland Yard's only female detective Mrs Pym investigates the murders of two people, members of the same psychic club.

As well as solving the crimes Mrs Pym has to deal with unhelpful male colleagues and her good-natured but incompetent assistant Inspector Shott.

[4][5] Monthly Film Bulletin wrote: "The story as ingenious and there is an abundance of thrills. ...

[6] Kine Weekly said: "The tale, both in its comedy and its thrills, is a first-rate vehicle for Mary Clare, and she seizes every opportunity.

"[7] In British Sound Films David Quinlan wrote: "Ingenious, creepy thriller with first-class role for Mary Clare"[8] Leslie Halliwell said: "A would-be series character bites the dust through plot malnutrition"[9]