Time Lock

Time Lock 1957 is a British thriller film directed by Gerald Thomas. The plot is about a sixyearold boy who is accidentally locked in a bank vault. With less thanhours of oxygen left in the vault, it becomes a race to save the boy. The film features a young, preJames Bond Sean Connery. The boy is played by Vincent Winter and his parents are played by Lee Patterson and Betty McDowall.

Source: Wikipedia