Rebus learns that Shankley, a small-time criminal in Glasgow, has been boasting of a windfall. Chasing him down, Rebus learns that he worked with Tony El to attack Mitchison, and that they both were hired by a mysterious Mr. H. With Jack's encouragement, Rebus finally gives up alcohol and cigarettes. Rebus begins to tie all the Johnny Bible killings to the oil industry, suspecting that he may well be an oilman. Rebus meets Marie, where she hands over information she has dug up on Weir; unaware that he is being watched by Bible John. The reader learns that Bible John broke into Rebus's flat, looking for his business card, which he gave Rebus before learning of his work with the police.