Terence Young and Eddie Chapman
Terence Young and Chapman were flatmates for a time before the war. Young was getting started in the British film industry and Chapman was cracking safes.
During the war, sometime in 1943, Young was taken from his regiment to London by MI5 to meet Chapman at a time when Chapman was in training for his return to occupied Europe and needed cheering up. As for "Triple Cross," Chapman evidently never saw a penny---something about the rights to his own book having been sold to someone in the States without Chapman's knowledge. Young got the rights later on and made the film, but by Chapman's wife's account never passed any money on to Eddie, and he and Young became estranged. See "Zigzag," by Nicholas Booth (2007).