The death of one of their roomers puts Miss Kate and Miss Aggie Scanlon into the Somerset (Conn.) timelight and keeps them on their toes to outsnub their snobbish sister-in-law. And when Miss Aggie plumps for murder, tries to link the dead man to the vanished son of a wealthy family, she fouls up the police while she forwards their niece's new romance, and asks for trouble from the killer. Plausible small town.