When Ivor Stocker, a J.P. and successful businessman, rteceives a blackmail threat, it becomes a case for Det-Insp. Maggie Forbes...

A series of robberies with violence have been reported. All have a similar pattern, and all are carried out by women. Maggie Forbes and her police team are puzzled to know who these women are. Or could it be one woman in many disguises.

Det.-Insp. Maggie Forbes spends a frustrating day at the law courts. She feels she would be much usefully employed trying to solve the criminal cases that keep arriving on her desk.