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When a bottle of pills goes missing from the Doctor's surgery, Harry Grout is worried that investigation of the theft by the prison authorities will jeopardise some of his activities. Grout insists that Fletcher must find the pills and return them before the warders can take action.

Fletcher's new cellmate turns out to be the judge who sentenced him to five years in Slade Prison.

Fletcher is worried that Judge Rawley might rob him of his main source of income - writing letters for illiterate inmates.

Old Blanco is doing time for the murder of his wife. He still swears he wasn't guilty. Now he's up before the Parole Board and it looks as if he's sure to be released. Blanco surprises everyone by turning down parole when it's offered to him. He explains that, if he accepts parole, he'll also be admitting that he was guilty of a crime for which he was wrongly convicted. He insists that he'll only leave prison if he's offered a full pardon. Fletcher comes up with a plan to help him.

Godber is working hard for an extra O-level. Fletcher tries to persuade him that cheating would be a good way of ensuring success in the examination. Godber isn't convinced.

Godber is due to appear before the parole board, but a fight with another inmate puts his parole in jeopardy. It's up to Fletcher to save the day.