Four more two-part murder mysteries take the duo from a private zoo where they unearth a possible organ-trafficking racket, to a community hospital where patients are dying and staff are being attacked. And crimes of passion and chance occurrences bring a past murder case back to haunt Dalziel.

Although they are total opposites, Superintendent Andy Dalziel, a blowhard old-school detective and his by-the-book partner, Peter Pascoe, form an unbeatable crime-stopping team.