Welcome to the neighborhood. Watch your husband, watch your friends, and watch your back. Cat Winthorpe has worked hard to get what she has: a gorgeous home; social standing; and William, her successful, handsome husband. Then a friendly new couple moves into the estate next door. While cautious, a good neighbor like Cat greets them with open arms and warm hospitality. Neena Ryder isn't a fellow lady of leisure. A life coach with off-the-rack dresses, personal issues, and a husband who hasn't delivered, she's anxious to move up in the world. This beautiful new town is a step in the right direction. It's also making Neena aware of what she doesn't have. Namely, William. When Neena's infatuation escalates into obsession, it's just a matter of eliminating a few obstacles to get the life she wants. The life next door.