When Erin and Will walk into Maggie's office for a marriage counseling session, Maggie believes they are an ordinary couple with ordinary communication, intimacy, the usual. When Erin mentions something connected to Maggie's past that she couldn't possibly know, Maggie is disturbed: Why does Erin know anything about Maggie's long-missing sister? She wants to uncover the truth, but Maggie knows her code of ethics as a therapist should immediately stop her working with this couple. Desperate for answers, she can't resist using her position to delve deeper into Erin's memories and what she might know. Erin and Will might not be what they seem... but neither is Maggie.