Rebus investigates a cold case that just turned red hot.

As he settles into an uneasy retirement, Rebus has given up his favorite vices. There's just one habit he can't shake: he can't let go of an unsolved case. It's the only pastime he has left and up until now, it's the only one that wasn't threatening to kill him. But when Rebus starts reexamining the facts behind the long-ago murder of a glamorous woman at a luxurious hotel - on the same night a famous rock star and his entourage where also staying there - the past...