Time Lock

Time Lock is a 1957 British thriller film directed by Gerald Thomas and starring Vincent Winter, Lee Patterson and Betty McDowall. It was written by Peter Rogers based on the CBC Television General Motors Theatre play of the same title by Arthur Hailey. It features a young, pre-James Bond Sean Connery. The film follows the attempt to rescue a six-year-old boy who is accidentally locked in a bank vault. The film was released in 1957 on a double bill with Ed Wood's Plan 9 From Outer Space (1957).

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.