The song. That's what London constable and sorcerer's apprentice Peter Grant first notices when he examines the corpse of Cyrus Wilkins, part-time jazz drummer and full-time accountant, who dropped dead of a heart attack while playing a gig at Soho's 606 Club. The notes of the old jazz standard are rising from the body - a sure sign that something about the man's death was not at all natural but instead supernatural. Body and soul - they're also what Peter will risk as he investigates a pattern of similar deaths in and around Soho.