Arriving in the aftermath of a very bloody London bank robbery, police arrest sole survivor Jo Simpson and attempt to piece together what happened. Interrogated by Professor Corner, Simpson tells her story of two young bank robbers, who were as concerned with being famous as with sucessfully pulling off the caper, and Michael Maitland, the veteran thief they recruited for the job. As Simpson's story continues it becomes apparent that there are multiple versions of what's being said. The only thing that's clear is that these criminals were all connected in some way, but no one seems to know who was really pulling the strings.