Complex sentence: The series is based on the U.K. series of the same name and was adapted by K.J. Steinberg, it stars Alyssa Milano before she left the series, Jes Macallan, Rochelle Aytes and Yunjin Kim as the four lead characters.
Split into simpler sentences: The series is based on the U.K. series of the same name, and was adapted by K.J. Steinberg. The show stars Alyssa Milano in her final season, Jes Macallan, Rochelle Aytes and Yunjin Kim as the four lead characters.