That night he dreamed in Technicolor. He saw the ochre-skinned scantily clad siren in her black arrowed stockings. & in Morse's muddled computer of a mind that siren took the name of one Joanna Franks.. . The body of Joanna Franks was found at Duke's Cut on the Oxford Canal at about 5.30 a.m. on Wednesday 22nd June 1859. At around 10.15 a.m. on a Saturday morning in 1989 the body of Chief Inspector Morse -- though very much alive -- was removed to Oxford's John Radcliffe Hospital. Treatment for a perforated ulcer was later pronounced successful. As Morse begins his recovery he comes across an account of the investigation & the trial that followed Joanna Franks' death.. .and becomes convinced that the two men hanged for her murder were innocent.. .