FOX | 8:30 pm
The magical island serves as the backdrop for an unofficial 'Melrose Place" reunion as three co-stars of that steamy Fox nighttime soap from the 1990s guest star in a new episode called "The Big Five-Oh." The story finds old friends Nettie, Camille and Margot (Laura Leighton, Josie Bissett, Daphne Zuniga) arriving on the island to celebrate their milestone birthdays together. Roselyn Sanchez and Kiara Barnes also star. Another new episode airs Tuesday.