Ace returns to Perivale to visit her friends, only to find they have been abducted to an alien planet by a race called the Cheetah People who were shown the way to Earth by the Master. The Doctor must find a way off the planet before they all succumb to its savage influence.

Set within the super-rich jet-set society of Paris, Richard Harris portrays a man whose life is gradually being destroyed. From sexual trauma to financial disaster, he slowly descends into a world of insanity, perversion and finally the bottomless pit!

After a tragic event happens, composer John Russell moves to Seattle to try to overcome it and build a new and peaceful life in a lonely big house that has been uninhabited for many years. But, soon after, the obscure history of such an old mansion and his own past begin to haunt him.