Cassandra "Caress" Morrell is Alexis Colby's crafty sister, who shows up after being released from a Venezuelan prison. She believes her s
ister, with the help of her friend Zachary Powers, put her there for the murder of Zack's wife, so she was hungry for revenge and tried to publish her own book and to embarass Alexis by exposing all of the rotten things she did.

Prepared to come up against her sister's vile schemes, Caress helped Blake Carrington to takeover "Denver-Carrington" that Alexis and Ben Carrington stole from him deceitfully. Ben had Caress kidnapped and sent back to prison in Venezuela, nevertheless, at the request of Blake Carrington, Dex Dexter and Clay Fallmont along with a group of commandos to rescue her.

More furious than before, Caress was now willing to utilize Emily Fallmont's knowledge of Ellen's death and to disclose the needful information on Ben's trickery regardless of Emily's mental state. After Emily's tragical death, Caress managed to straighten things, up to a level, with Alexis and then leaves Denver.