Celia Snow and Yves Jagger's decision to hire interior designer Mandy Wright proves disastrous when Mandy develops an obsession with Yves. Blurring professional boundaries, she deliberately sows discord between the couple. When Celia's requests for a replacement designer are denied, the situation spirals into danger—Mandy corners her with a knife, delivering an ultimatum: divorce Yves or have her face permanently scarred.
