Though based on a true story of a British safecracker who worked as a double spy during the Second World War, Triple Cross is made in the standard spy pattern of having him a ladies’ man, fast with his mitts, glib and shrewd, and with overloaded and obvious suspense bits thrown in to rob this of the verisimilitude needed to give it a more original fillip.
Director Terence Young plays this slightly tongue-in-cheek and it actually emerges as a sort of mini-Bond. Christopher Plummer is first seen cracking a series of safes and is finally arrested on Jersey. Along comes war and the Germans take over the island. He bluffs his way into getting a hearing with some top German undercover people.
He manages to gull them into letting him work for them and is finally entrusted with a mission. Once in Britain he goes to the British security people, finally convinces them and goes to work for them for a big sum and a promise to wipe out his criminal record.
Plummer walks through his role and does not quite have the impassive mask for the pro criminal or the needed lightness to give the romantic dash it calls for.