In "Parents Know Best," Phyllis and Harry Morrison : (Janis Paige and Monty Hall) take their 22-year-old son, Bruce (Mark Shera), on a cruise, seeking to end his relationship with Diana Lane (Laurie Prange), who is aboard for reasons of her own. Fred S. Fox and Seaman Jacobs wrote the script. Dan Michaels (Leslie Nielsen) and Laura Wakefield (Lynda Day George) plan to marry when the ship docks at Cabo San Lucas. Dan is pushing 50. Laura is much younger. During the cruise, Laura becomes friendly with a young man named Gary (Craig Littler) and Dan enjoys the company of Glenda Fairbanks (Marla Adams), a lady closer to his age. With a little help from Capt. Stubing, Dan and Laura get an unexpected lesson in true love in "A Selfless Love," written by Phil Foster and Marion Zola. Dawn Delaney (Elaine Joyce) is a shapely ex-showgirl who happens to be a registered nurse reporting for duty with a year of pre-med training in "The Nubile Nurse." Doc can only think of Dawn in Las Vegas, but this RN is full of surprises. Barry Blitzer wrote the script.