Mannix must decipher the fantasies of an emotionally-disturbed 9-year-old girl who witnesses the death of her doctor and the theft of $150,000 in bearer bonds.

A private eye and friend of Mannix's turn up dead, apparently drowned. But Mannix believes there's more involved... as do the two men who abduct Peggy and Toby and demand Mannix turn the evidence over to him.

An alleged crook, Armitage, is murdered on air while participating in a telephone interview. A woman is caught fleeing the scene and arrested, and her twin sister hires Mannix to prove her innocent.