The temperamental TARDIS materialises on a strange planet close to a building surrounded by machines and spaceships that the 'time and space' travellers soon realise is a vast museum. Initially nonplussed by their apparent incorporealness (no one can hear or see them and their hands pass though the exhibits) and the subsequent discovery of their bodies in display cabinets, the Doctor (William Hartnell) concludes that they have somehow been shifted in time and the bodies that they see on exhibit are themselves from a near future after they have been captured by the museum curators and put on display. This intriguing premise builds to a great episode-one cliff-hanger that sadly leads to three repetitious and dull episodes of intrigue and lacklustre 'action sequences' as uninteresting rebels recruit Ian, Barbra and Vicki in their squabble with the equally uninteresting museum-colonisers. Ian (William Russell) gets to do a bit of brawling and Vicki (Maureen O'Brien) gets a chance to demonstrate her technical ability (reminding us that she is highly educated and from an era of human interstellar travel). Sadly, the conclusions of most reviewers (then and now) agree: a great opening episode squandered. Too bad. *comments and score refer to the 4-part serial.