Checkmate

Kindly old Felix Aylmer lives in London with his two daughters Evelyn Foster and Sally Gray. They advertise for a lodger and they get one in Maurice Evans. But they don't know at first he's a Scotland Yard man going undercover. The daughters don't know that dear old dad is head of a gang of thieves.

One in said gang is Donald Wolfit who Evans already knows is a break in man. The idea is catch them with the goods.

Evans is eager, but a bit of a dunce. The gang keeps fooling him until the very end.

Interesting quota quickie from Great Britain with three player in their salad days.