"Paying the Price" Rendered homeless by his own carelessness after burning his house down, Frost takes on a kidnapping case with the help of WPC Claire Toms. A 24-hour operation at the victim's flat leads to escalating demands from the kidnapper and even Frost finds it difficult to keep cool under the pressure.
"Unknown Soldiers" Frost finds himself staring down the barrel of a gun when he interviews a suspected drug dealer and then finds himself confronted by an armed robbery. But, he's far more intrigued by the death of a young soldier at an army camp. It's strictly off limits to police, but that has never stopped Frost before.
"Fun Times for Swingers" Frost encounters the world of male escorts in this episode but he has a rude introduction when a naked woman throws herself from the roof of Denton Church. Frost uncovers a snapshot of a man with whom she had an affair, but the next day the man himself is found murdered.
"The Things We Do for Love" The savage murder of a young physiotherapist sends Frost in pursuit of the names in her electronic organizer. The prime suspect is a pillar of the local church, but Frost's conviction that he is the killer is refuted by a water-tight alibi.
"Deep Waters" Frost is determined to make two suspects confess after a vicious knife attack, but an adversarial solicitor points out that justice has to be done despite what Frost's instinct tells him. That aside, can he trust his hunch about a mysterious assailant at the local university... or not?
Paying the Price
Fun Times for Swingers
The Things We Do for Love