Frost is under enormous pressure as he copes with the impending death of his wife. Meanwhile, the search for a missing child unearths evidence of a crime that took place 30-years earlier.

There are threats, deaths, arson and a staff shortage at the police station. For Frost, anything has to be better than staying at home with an unwelcome guest.

Insp Frost has plenty on his plate when an MP's son is involved in a hit-and-run accident and a casino robbery takes place on the same night. Later, the crisis situation is exacerbated when a police officer goes missing.

Faced with the death of a police informer on an estate riven with racial tension, Frost finds his patience pushed to the limit.

There is plenty on Frost's plate when senior citizens are targeted in a string of vicious attacks, but at least he can call on his attractive new female sergeant for help.

Frost is called upon to solve the mystery of a young drug addict found dead in a lavatory.