Double Trouble

Peter Jade earns his living as a crook. During one of his thieving tours, a puzzling circuit board falls into his hands. He soon realizes that there is a counterpart to this plate; with both plates, you are able to open a safe on the international diamond exchange. The leader of a criminal organization, Philip Chamberlain, has taken possession of the other circuit board, also recognizes the connection, and goes in search of its counterpart.