When the gang meets up with famous fright-writer Ben Ravencroft, he invites them to New England for his hometown's big Autumn Harvest Festival. Things take a supernatural detour when they learn the place is haunted - by Ben's ancestor Sarah. The gang is on the case, tangling with bumbling mummies, monster turkeys and a ghostly secret hidden in the Ravencroft family's past.

Dorothy Martin and her husband, retired Chief Constable Alan Nesbitt, are invited to join their close friends Nigel and Inga Evans at a Welsh music festival. Amid the glorious surroundings of Welsh castles and the history of long-ago battles, the stage is set for an enjoyable event. However, when a tragic accident takes the life of one of the choir, and the same fate befalls the star soloist, Dorothy and Alan find themselves in the midst of an investigation...