This novel is based on Arthur Conan Doyle's extraordinary real-life fight for justice. Arthur and George grow up worlds and miles apart in late 19th-century Britain: Arthur in shabby-genteel Edinburgh, George in the vicarage of a small Staffordshire village. Arthur becomes a doctor, and then a writer, George a solicitor in Birmingham. Arthur is to become one of the most famous men of his age; George remains in hardworking obscurity. But as the new century begins, they are brought together by a sequence of events which made sensational headlines at the time as The Great Wyrley Outrages.

George Edjali's father is Indian, his mother Scottish. When the family begins to receive vicious anonymous letters, many about their son, they put it down to racial prejudice. They appeal to the police, to no less than the Chief Constable, but to their dismay he appears to suspect George of being the letters' author. Then someone starts slashing horses and livestock. Again the police seem to suspect the shy, aloof Birmingham solicitor. He is arrested and, on the flimsiest evidence, sent to trial, found guilty and sentenced to seven years' hard labour.

Arthur Conan Doyle, famous as the creator of the world's greatest detective, is mourning his first wife (having been chastely in love for 10 years with the woman who was to become his second) when he hears about the Edjali case. Incensed at this obvious miscarriage of justice, he is galvanised into trying to clear George's name. With a mixture of detailed research and vivid imagination, Julian Barnes brings to life not just this long-forgotten case but the inner lives of these two very different men.