Dynasty's Kate O'Mara Dead at 74

Kate O'Mara DeadBritish actress Kate O’Mara, best known to U.S. audiences for playing Alexis Colby’s sister Caress Morell in Dynasty, passed away Sunday morning. She was 74.

O’Mara died in Sussex, England, after a brief illness, our sister site Deadline reports.

In addition to her role in Dynasty, O’Mara’s extensive television career also included roles in BBC One’s Doctor Who (The Rani) and Howards’ Way (Laura Wilde). She was last seen playing Mrs. Simmons in a 2012 episode of ITV’s Benidorm.

Joan Collins, who appeared opposite O’Mara in Dynasty, tweeted about her former co-star’s death: