AllMovie

The community players of Cabot Cove have chosen to stage a play about a 17th century witch who had placed a curse on the town just before her execution. Cast in the lead role is Mariah Osborne (Mary Crosby), a newcomer to the town. Before long, strange things begin happening, convincing the townsfolk that Mariah is not merely acting, but is in truth the reincarnation of the notorious witch. Assisting Jessica (Angela Lansbury) in her investigation of the inevitable murder is the town's new deputy Dave Anderson, played by Louis Herthum--who in his previous series appearance was known as "Deputy Andy Bloom."