A strange but compelling manuscript, supposedly the memoir of a Church of Scotland minister who has gone missing, arrives on the desk of an Edinburgh publisher. It tells the story of Gideon Mack, a son of the manse raised in chilly austerity and dominated by a joyless father, who claims to have met the Devil. Mixing fantasy, legend and history, The Testament of Gideon Mack is an ambitious, mesmerising novel which combines superlative storytelling with immense imaginative power.