Even as Lizzie Kitsakis is realizing that her marriage is in trouble, she's working late at the law firm when she gets a call from an old friend asking for help. Zach Grayson says his wife Amanda has been found dead in their home, and Zach is the primary suspect. As Lizzie investigates, she learns that Zach and Amanda weren't what they seemed. She's left wondering not only whether her own marriage can be saved but what it means to have a good marriage in the first place.