Unassuming Yorkshireman, Arthur Skelton, is one of the most celebrated and recognisable barristers in the land. His success in the high-profile Dryden case - 'the scandal of 1929' - catapulted him to the front pages of the national newspapers. His services are now much in demand and, after careful consideration, he agrees to defend Mary Dutton. Dubbed 'The Collingford Poisoner' by the press, Mary is accused of poisoning her husband after years of abuse. Together with his trusted assistant, Skelton digs deeper and discovers that secrets and lies run deep in the Dutton family and all is not as it appears.

A woman's dismembered corpse is discovered in a suitcase, and police quickly identify her husband, Doctor Ibrahim Aziz, as their chief suspect. Incriminating evidence is discovered at his home and his wife was rumoured to be having an affair, giving him clear motive. With his reputation for winning hopeless cases, barrister Arthur Skelton is asked to represent the accused. Though Aziz's guilt does not seem to be in doubt, a question of diplomacy and misplaced larvae soon lead Skelton to suspect there may be more to the victim's death. Aided by his loyal clerk Edgar, Skelton soon finds himself seeking justice for both victim and defendant. But can he uncover the truth before an innocent man is put on trial and condemned to the gallows?

Guy Fawkes Night, 5th November, 1930. Bonfires are blazing, rockets burst. In a country lane, revellers discover a car that has been set on fire. At first, they assume that this is the work of vandals taking the Guy Fawkes spirit a little too far, sitting at the wheel is a body, charred beyond recognition. The initial assumption is that the owner of the car, Mr Harold Musgrave, a successful travelling salesman has taken his own life in a particularly grisly act of self-immolation. The post-mortem, however, reveals that Mr Musgrave was either unconscious or dead before the fire was lit. When Tommy Prosser, a local criminal, is charged with the murder, barrister Arthur Skelton believes him to be innocent, so sets out to ensure justice is served.