Guest Stars Patti Davis as Brenda Donald O'Connor as Leo Halbert Gloria DeHaven as Mary Halbert Nancy Dussault as Dr. Dorothee Davis Thom Bray as Lowell Mandell Co Starring Teri Hatcher as Amy (Love Boat Mermaid) Debbie Bartlett as Susie (Love Boat Mermaid) Tori Brenno as Maria (Love Boat Mermaid) Nanci Hammond as Jane (Love Boat Mermaid) Debra Johnson as Patti (Love Boat Mermaid) Macarena as Sheila (Love Boat Mermaid) Andrea Moen as Starlight (Love Boat Mermaid) Beth Myatt as Mary Beth (Love Boat Mermaid) Uncredited Vincent Di Paolo as Passenger
