Ray Walston breaks the fourth wall by directly addressing viewers.
The title is based on the novel 'Strange Case of Dr Jekyll and Mr Hyde', written by Robert Louis Stevenson and first published in 1886.
Paula's nerdy boyfriend, Edgar, is played by a young Tom Skerritt, who, almost three decades later, starred as 'Sheriff Jimmy Brock' in the quirky, critically-acclaimed TV show "Picket Fences", for which he won two Emmys as Best Actor.
Although she's hard to recognize behind the nerd glasses and frumpy clothing, the role of Mrs. Brown's niece, Paula, is played by none other than Marlo Thomas, who, three years later, would go on to star in the popular sitcom "That Girl".