Bewitched - Season 1 Episode 36 -

Endora is not alone when she tries to break up the Stephens' marriage. It seems that a mute elf named Edgar voices his disapproval when he begins playing dirty tricks on Darrin. As a result of these tricks, a competitor named Fred Schulwiler almost gets a shoe account. Edgar realizes that Samantha really loves Darrin and to show his appreciation, Edgar helps Darrin win the account by playing pranks on Schulwiler.