It is interesting to note that Abigail is the one of the few witches to appear on the show who's name doesn't end with the letter "A".
This begins the countdown to the birth of little Adam Stephens. Ironically, when Elizabeth Montgomery gave birth in real life a few months later, she had a daughter. Of course, when she had her youngest son in real life that was when Tabitha was born.
Dick York does not appear in this episode. In this episode, Samantha tells Darrin on the phone that she is pregnant, even though she was in her sixth month when this episode was filmed on March 4, 1969. Dick York had left the show by this time and until they found a replacement, the writers had Darrin as being "away on business".