Girl meets boy. They fall in love. There's just one problem... Georgia and Luke are in love. They've only been dating for a few months but Georgia is pretty sure he's the one. They get along so well; he's romantic and kind and funny. There's just one problem: Luke's ex-girlfriend, Cadence, is having trouble moving on. She texts him all the time, won't give Luke back some of his things and Georgia is convinced Cadence has followed them on more than one occasion. It's starting to get creepy. Georgia and Luke soon move in together but the shadow of Cadence looms large. Georgia is conflicted - on the one hand she is the happiest she has been in a very long time, but this stalker-ex thing is getting old real quick. She needs Cadence to calm down and stop interfering with their lives. Georgia decides to go to Cadence's apartment and confront her, woman to woman ... that's when things get interesting.From the bestselling author of The Fifth Letter comes a twisty, pacy, gripping new novel that explores the baggage we carry from our past relationships and asks how well can you ever really know someone.