A Touch of Frost Season 4 includes:
Paying the Price - Rendered homeless by his own carelessness after burning his house down, Frost takes on a kidnapping case. 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. He also investigates the holdup of a security van by a gang wielding sawn-off shotguns. 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 him before.
Fun Times for Swingers - Frost gets a rude introduction into the world of male escorts when a naked woman throws herself from the roof of Denton Church. He discovers the photograph 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 Jack in pursuit of the names in her electronic organizer. The prime suspect is a pillar of the local church, but Frost's belief that he is the true 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 must be done despite what Jacks instincts tell him. That aside, can he trust his hunch about a mysterious assailant at the local university... or not?