Philip Main is recruited has a probation officer. Arthur Finney was arrested for burglary. The prison doctor says the boy has been a marijuana addict for three months. Main attempts to build a relationship with the boy and his parents.
Mr. Alexander asks Philip Main to help him to persuade his son Johnny not to marry white girl Mary Sadler. When a razor gang attack the pair, he kills one in self defence. Mary decides to comes forward to give evidence in his defence.
Residivist Patsy Morley convinces the Judge that he is worth another chance, so Philip Main has to access him for probation. Meanwhile marijuana addict Arthur Finney has been sent to the psychiatric ward and is desperate to talk to Main..
An old friend of Philip Main, Corporal Len Grantham contacts him for help with his marriage. He says his German wife, Eva is seeing a married man Mr. Daniels and wants it to stop. Jim Blake thinks that Iris Cope must deal with the wife.
Iris Cope is given the task of helping Carrie West, a doctor's daughter given a two years probation for stealing. Her parents are unable to control her behaviour so Iris has no choice but to hand her over to senior colleague Miss Randell.
Former regular army officer Colonel Chester is in court for using his cane to smash a car windscreen. Philip Main has to make a probation report and realises the Colonel could be perfect solution for dealing with jailbird Nobby Clarke.
Con Barnes is released from borstal and starts a knife fight with Larry Melvin. Both are arrested. When Blake visits Melvin's family they turn on him. Meanwhile Lily Smith changes Barnes narrative and leaves facing Melvin a long sentence.
During a Ban the Bomb demonstration a police horse rider is felled. Peter Fry is the nearest person and arrested. He is sentenced to 14 years in jail, suspended for one year. Main needs to persuade him to keep to the terms of his release.
Joyce Langley and Kathleen Morgan are charged of attacking John Anderson. Morgan is sentenced to six months in jail but Langley is given probation has it is her first offence. Iris Cope hopes to persuade Joyce not to go into prostitution.
Philip Main'd client Mr. Belcher is father of six children charged for receiving stolen goods from his daughter. Main would like him to have probation. Iris Cope has deal with daughter Myrtle who seems unwillingly to cooperate with her.
Richard Bates is found guilty of GBH, on Peter Woodburn, in a drunken rage. Bates was a former staff officer and a managing director but lost his job when the company was taken over. Jim Blake attempts to help him with his alcoholism.
A youth with a bad past is found the one kind of work - wood carving - that interests him but there is trouble when a shop steward recognises him as someone who is on probation.
70-year-old grandad Charlie Toliver has broke into the gas meter to pay for his radio. At court, the judge Charlie is given 12 months probation. Jim Blake wants Charlie to consider part time work but his family disagree over his future.
Merchant seaman Greg Miller is told by a doctor that he is unfit to continue his life at sea because of failing eyesight. When he gets involved in a brawl his case comes to the attention of the probation officers.
