Arthur Skelton, a celebrated barrister, agrees to defend Mary Dutton, dubbed 'The Collingford Poisoner' by the press. But Skelton soon discovers that all is not as it appears.

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.