S03E24: Dumb Luck/Tres Amigos/Hey, Jealous Lover

Julie worries that her brilliant nuclear physicist friend will never find a man because her intelligence intimidates suitors. She encourages her to act dumb to attract a man's attention. Vicki befriends a wealthy young passenger. While exploring the ship, they discover a stowaway, a young boy who wants to visit his mother in Mexico. A jealous husband terrifies the crew as he constantly threatens the guys, who he suspects are coming on to his wife.