DI Frost has been making no progress in finding a serial rapist in the Denton area, so Mullet assigns WPC Wallace to him to broaden his perspective.

Although DCI Frost is initially advised that a young addict found in a public toilet died by choking on his own vomit, he later learns that he was beaten to death.

Frost investigates two serial criminals preying on senior women, a burglar and a serial killer while working with a beautiful new partner.

While Frost is investigating a series of burglaries in a black area of Denton, one of his informants, a single mother, is murdered as Mullett worries about bad press.