The Love Boat S01E05 - Help! Murder! / Isaac the Groupie / Mr. Popularity

In "Help, Murder," Denise and Bret (Michele Lee and David Groh) are a married couple getting away from their three kids for the first time. When Bret and cruise director Julie McCoy get together to plan a surprise birthday party, Denise gets the notion her husband is playing around and planning to dump her at sea. James Sheldon directed the script by Ben Joelson and Art Baer. Isaac (Ted Lange), the bartender, falls head-over-heels in love with Roxie Blue (Diahann Carroll), a glamorous star traveling incognito in "Isaac the Groupie." Roxie and Isaac have a good thing going until the sophisticated lady realizes the relationship is much more than a casual affair.