The leader of a spiritual retreat is strangled and Jack and his team are baffled by the fact that all their suspects were in a meditation circle at the time of the murder.

When Billy Springer, lead guitarist of a popular reggae band, is murdered, DI Mooney and his team must crack a cold case that has haunted the Commissioner for years, before they can arrest the killer.

After performing on stage as part of Leon And The Ragers 30-year reunion gig, Billy is found dead moments later in his dressing room.