Shayne is hired by a wealthy widow (Ethel Gryffies) to retrieve a valuable coin which she thinks that her daughter-in-law (Doris Merrick) has stolen when she left. Shayne uncovers a trail leading to a gang of counterfeiters but there is something a lot darker uncovered too, a trail leading to blackmail and murder...
A fine way to end the Nolan series of Shayne films, though this was originally a Raymond Chandler story which was later made as the Philip Marlow story Brasher Doubloon in 1947. This version of the story is played a little lighter with plenty of wise cracks and snappy dialogue and scenes.