All families have secrets, but perhaps none so shocking as that which Frost unearths when he investigates the brutal murder of Peter Lawson.

Returning from holiday, Frost investigates a drowning death in the river, but the autopsy reveals she was drowned in a bathtub.

A face from the past may be responsible for a series of assaults on children. But, for once, sentimentality dictates Frost's actions.

A manpower shortage and a rash of child kidnapped for ransom force a vacationing Frost back to work partnering with beautiful but ambitious DS Liz Maud.