Thomasina is the pet cat of Mary McDhui, the daughter of Scottish veterinarian Andrew McDhui. When Thomasina falls ill, McDhui declares that the pet should be put down. But when Mary and her father try to bury the cat, Lori MacGregor (Susan Hampshire), who is said to be a witch, shows up and attempts to steal it.
Patrick McGoohan
as Andrew McDhui
Susan Hampshire
as Lori MacGregor
Karen Dotrice
as Mary McDhui
Laurence Naismith
as Reverend Angus Paddie
Jean Anderson
as Mrs. MacKenzie
Matthew Garber
as Geordie McNab
Denis Gilmore
as Jamie McNab
Vincent Winter
as Hughie Stirling
Finlay Currie
as Grandpa Stirling
Elspeth March
as Voice of "Thomasina"
Nora Nicholson
as Annie Laggan
Francis de Wolff
as King Targu
