Cristal's efforts to mend her fractured marriage are complicated when a dangerous newcomer threatens to destroy everything she and Blake hold dear; Meanwhile, Fallon celebrates her golden birthday and gains control of her trust, forcing her to think about more than just what size champagne bottles to serve at her party.

When the Carringtons host a lavish Casino Night party, Cristal and Blake's marriage is put to the test when an explosive secret from Blake's past surfaces. Meanwhile, Fallon must reconsider her behavior as she attempts to fix a professional blunder by accepting an indecent proposal.