Agent London (Gene Barry) has been despatched to Istanbul to win an auction for some secret documents, which rival powers are also interested in. London will receive the number to the safety deposit box where the cash is from different people along the way as he travels from Paris on a train, which is protected by Cheval (John Saxon).
However, is the auction all that it seems and can he keep away from the clutches of the Communists led by Darvos (Senta Berger)?
A good plot though a little ridiculous and convoluted to suit the TV movie format. Quite why he needed to be given the safety deposit number in separate digits is a little silly but does make for plenty of exciting scenes and perils. Highly enjoyable film with a good twist.