Burn It All, Mom

Sloane Breen, the true power behind the Breen Group, returns home after six years. She finds her son Ethan with his mistress Veronica, who mistakes her for Nina. Sloane plays along, observes, and finally reveals her identity at a banquet, disowns her son, and names Nina as heir. Veronica and Ethan keep scheming, but Sloane gathers evidence and brings them to justice.