England, 1883. The Doctor brings Ace to a house called Gabriel Chase in her home town of Perivale. The Gothic mansion is presided over by one Josiah Samuel Smith--an evolved alien brought to Earth in a stone spaceship that is now in the basement bene... (more)ath the house, and which still holds an ancient evil capable of wiping out the world.

Brenda Kempner, Carl Forgione, Frank Windsor, Ian Hogg, Jack Talbot, John Nettleton, Katharine Schlesinger, Keith Harvie, Sharon Duce, Sylvia Syms