Doctor Who
Planet of the Spiders
S11 E21:
Mike Yates (who left UNIT after his involvement in the affair with the Dinosaurs) contacts Sarah-Jane about mysterious goings on in a Buddhist retreat in the English countryside. Soon it becomes apparent that an extraterrestrial force is attempting to reclaim a crystal the Doctor 'borrowed' from Metebelis 3.
Starring
Cyril Shaps, John Dearth, Christopher Burgess