After a two-year absence Lorna Webster (Nancy Kelly) is returning to her hometown. Beside her on the bus is a crone looking woman, Jezebel Trister (Elspeth Dudgeon,) who is also traveling to the town to get revenge on the descendent of the Webster that burned her as a witch 300 years ago. The bus veers off the road in crashes into the lake. Only Lorna survives and the body of the old lady is not found.
Was there an old lady? Or was it an imaginary figment? This and other strange coincidences are convincing Lorna that she is being possessed with whtchyness and the town is going along with her.?
Will she and her little dog too, dispatch the town's people one by one or will they have the courage to do unto her first?
As a psychological thriller, some may want to compare this film to Val Lewton. I think more in the line of
She-Wolf of London (1946) with June Lockhart.