The discovery of a charred corpse in a disused railway tunnel sets Taggart on the gruesome hunt for a ruthless killer in an investigation with sinister undertones of black magic and voodoo. The wife of an arthritic dentist narrowly escapes a series of murder attempts, adding to a complex case for Taggart and his team.

Jardine and Reid investigate a killing in a country house swimming pool. One of the victims is Rick Mulvey, former lead guitar of the 60s pop group, the Adders. Their vocalist died while on tour 25 years ago. Ian Garvey, Kate McCready's boyfriend is savagely beaten by two bouncers, and the following day, he is knocked down by DC Reid in her car.