The Love Boat S01 E05 Help, Murder/Isaac the Groupie/Mr. Popularity

"You Say You Can't Score on Shore? On This Cruise... You Can't Lose!"

A woman gets the wrong idea from her husband's secretive behavior and fears that he is plotting to murder her. Isaac begins a whirlwind romance with an internationally known singer. A couple suspects that a painfully boring passenger is actually a wanted jewel thief.