"Dynasty's" Caress, Actress Kate O'Mara, Dead At 74

(Sussex, England) -- British actress Kate O'Mara, best known for playing Joan Collins' sister on TV's "Dynasty," has died. O'Mara's agent says she passed away in a nursing home in Sussex, England after a brief illness Sunday. She was 74. O'Mara played Alexis Colby's manipulative sister Caress Morell on "Dynasty" for two seasons. She also played the villain The Rani on the sci-fi series "Doctor Who" and starred in the BBC soap opera Triangle.