Bea Abbot is visiting her old friend Sir Julian at Marston Hall, but her trip starts badly when she arrives to a scene of chaos. It seems that a group of youths armed with metal detectors broke into the derelict amusement park in the grounds of the Hall and fled when disturbed ... leaving the body of a middle-aged man behind. The police and Sir Julian's estate manager assume this is a missing security guard, Pete, but Sir Julian has doubts. Is the dead man really Pete, and if not, then where is he and his border collie, Beauty? With rumors of buried treasure and family curses circulating in the village, and with Sir Julian and Bruno the Alsatian at her side, Bea sets out to find the truth - and catch the killer.