Early William Hartnell hardboiled cat-and-mouse detective story. Hartnell plays a man who is trying to get revenge for being abandoned on a job he was convinced was a snap. Very different from The Doctor.

A dark and gritty entry into the "spiv cycle" series of British crime dramas of the 1940s. The shadowy cinematography gives the whole thing a noirish feel, but it's let down by an unremarkable plot and some bad editing and continuity decisions (things you rarely notice unless they're wrong). William Hartnell gives a particularly wooden performance in the lead role, although Herbert Lom (as ever) is good value as the - ahem - "flamboyant" mob boss.