The Doctor leaves K9 Mark III as a gift to Sarah Jane, who is living with her Aunt Lavinia. Her aunt's ward, Brendan, is kidnapped by witches and it's up to Sarah Jane and K9 to save the day.
Quest roles:
Bill Fraser(General Grugger), Colin Jeavons(Damon), Ian Sears(Brendan Richards), John Quarmby(Henry Tobias), Mary Wimbush(Aunt Lavinia), Neville Barber(Dr. Cook)