Crouch End Confidential, the agency started by housewife and mother Cathy O'Farrell, with ex-cleaner, Pimple, is failing badly. Hardly surprising when Cathy is too soft-hearted to charge their only clients, little old ladies seeking lost pets and a school kid searching for his stolen bike. A new case involving a teenager in possession of an unexplained Glock pistol promises to change all that. Quickly, Cathy finds herself deep in waters over her head, forced with hilarious results to pose as a mathematics tutor, a subject of which she is truly clueless. There's also the tricky situation of best friend and new mother Rosa hiring her to investigate her fiancé, Alec, plus the mysterious sabotage of Cathy's friends' cycle shop and a gang of yabbos dealing drugs at her children's primary school.