Leslie Banks (The Arsenal Stadium Mystery, Went The Day Well?) stars as inventor John Barrington in this thrilling Second World War feature film.

Secretly testing bomb mechanisms for the Air Ministry at a laboratory in his remote country house, Barrington is key to the war effort. Unbeknownst to him, various members of his domestic staff are undercover spies working for the enemy and their plan is to kidnap Barrington, aided by a German agent who comes in the form of a wounded RAF pilot taken in by the house. What the would-be kidnappers don't know, however, is that they are also being spied upon...

Special Features:

• Image Gallery.
• The Prodigal Daughter - a play from 1975 starring Alastair Sim and Jeremy Brett.