Eileen (guest star Debbi Morgan), a flamboyant eccentric, arrives on the island hoping to spend time with her estranged daughter and her family, but they're not remotely interested in that idea, in the new episode "Quantum Entanglement." The new arrivals also include Charles (guest star Cliff Chamberlain), a depressed physics professor seeking reassurance that the universe has something greater out there for him. Roselyn Sanchez and Kiara Barnes star; Mieko Hillman, Rodrigo Rojas, Katira Maria and John Gabriel Rodriguez also guest star.