Daphne Ashbrook (Captain Ruth Matheson), Yee Jee Tso (Warrant Officer Charlie Sato), Katy Manning (Jo Grant), Wendy Padbury (Zoe Heriot), Peter Purves (Steven Taylor), Mary Tamm (Romana)
Welcome to The Vault – jokingly known as 'The Museum of Terrors' – a high security establishment where UNIT keeps all of its alien artifacts.
New recruit Warrant Officer Charlie Sato is given a guided tour by Captain Ruth Matheson, and the archive reveals some dark secrets. An army jacket, a painting, crystal and a wax cylinder all hold a grave significance, and their stories are told by the Doctor's companions: Steven Taylor, Zoe Heriot, Jo Grant and Romana...
(Duration: 60' approx)