Forty years may have passed, but the death of Maria Turquand still preys on John Rebus' mind. Murdered in her hotel room on the night a famous rock was staying there, Maria's killer has never been found. Meanwhile, the dark heart of Edinburgh remains up for grabs. A young pretender may have staked his claim, but has old-time crime boss Big Ger Cafferty really given up the ghost, or is he biding his time until Edinburgh is once more ripe for the picking?