Violence flares up when a student protest meets a counter-demonstration. A young demonstrator is killed by a blow to the head. The nearest person to the body is a mounted officer Tyrell . DCS Kingdom now faces a difficult case, where strong evidence accumulates against a brother policeman.

Kingdom investigates the murder of a retired bank manager.

Kingdom investigates a fanatical Nazi-hunter.

Ward challenges Kingdom over his handling of an investigation into a serial killer.

Kingdom investigates two apparently unrelated murders, but both victims were killed with the same gun.

A man confesses to killing his wife in a practical joke.

Kingdom investigates the murder of a prisoner.

Kingdom investigates a series of arson attacks on betting shops.

Kingdom investigates what's appears to be the perfect murder.

Kingdom investigates the finances of a murdered couturier.

Kingdom explores the world of drop-outs when the body of a murdered girl is found on a rubbish tip.

On the night that Steve Thomas escapes from prison, a solicitor is found murdered in his office - and £11 is missing from the cash box. Kingdom and Ward investigate, but why should anyone commit murder for such a small sum.

Inspector Ward hopes to catch the brain behind a series of bank robberies through his contract with a shady ex- insurance agent , Charles Prentice. But when Ward arrives at Prentice's flat to finalise the arrangements, he finds Kingdom , who is there to investigate a murder - and the Inspector's activities.