Tom's Midnight Garden (1974)

The Clock Strikes Thirteen (1x1)

Air date: Jan 07, 1974

Tom, arriving at his aunt and uncle's flat in an old manor house, is intrigued by a clock in the downstairs hall that often strikes the wrong time. When he hears it striking 13 at midnight, he feels he must go down in the dead of night to investigate... and gets the surprise of his life.