After a tragic chain of events led to the deaths of their spouses two years ago, D.C. philanthropist Sloane Chase and Senator Whit Montgomery are finally starting to move on --- with each other. They decide that hiring a home health aide will give Sloane the support and independence she needs after her upcoming hip replacement surgery. And they find the perfect fit in Athena Karras. Athena tends to Sloane and even helps her run her charitable foundation. But Sloane slowly begins to deteriorate, and her uncertainty quickly turns to paranoia as she begins to suspect the worst. Why is Athena asking her so many probing questions about her foundation --- as well as about her past? And could Sloane be imagining the sultry looks between Athena and her new husband?