While Darrin is working late, Aunt Clara tells Samantha her old boy friend Ockie, a warlock posing as Lord Ockham, has opened a hotel in are old castle in England. However, Mc Tavish, the an-cestral ghost, is ruining business by scaring Ockie's guests. Reluctantly, Samantha agrees to help Ockie. Samantha chases the elusive ghost, clanking his chains and laughing eerily, all over the castle. Darrin's mother, one of the terrified guests, tells her incredulous husband she saw Samantha and phones Darrin. Mc Tavish finally materializes and seta about terrifying Samantha with his removable head. Unimpressed, Samantha suggests he find a more comfortable place to haunt and he'd be in great demand in America. Darrin's mother finds Samantha but sees Mc Tavish and faints. Samantha pops back home to find Darrin, somewhat high, philo-sophizing that she can't be just an ordinary housewife. He is scared silly as Mc Tavish appears, declares he has taken Samantha's suggestion and will now haunt the Stephens. Darrin's parents fly home to sea Samantha. Ockie pops in to beg Mc Tavish to come back because the guests miss him. Ockie agrees to McTavish's demands for central heating, air conditioning and plastic chains. Just as Samantha reassures Darrin's parents, Aunt Clara appears with a 15th century portrait of Mc Tavish.