Sheffield, England: someone in the steelworks is selling details of a new alloy to a foreign agent. The children lead to his capture with the help of a prize pigeon.
Director: Gilbert Gunn.
Stars: Judy Geeson, Hennie Scott, Patrick Jordan, Francesca Bertorelli, Graham Aza, Anthony Jacobs, John Gabriel, Richard Carpenter, Arnold Ridley.
Many thanks to “Movies Man” for sending me a copy of this movie.