This mystery novel, set in Chicago, centers on a nursing home called The Larkspur. Chips Devlin is, after the death of his housekeeper, placed in The Larkspur by a relative. Chips has been a mentor to Jimmy Flannery, who tries to find out why Chips has been so hastily put there.
Nosing around through Chicago's political and public service offices. Jimmy calls in favors and hands them out in an effort to learn what's really going on at The Larkspur, the 3-story converted mansion with a big back yard (complete with duck pond). After an elderly man who Jimmy had asked to be a lookout is murdered, Jimmy kidnaps Chips from The Larkspur but can't keep himself from trying to help those that remain by solving the murder.