How well do we know our children? Natalie Falcone would say she knows her daughter, Arden, very well. Despite the challenges of running a restaurant and raising six-year-old twin boys, she's not too worried as she sends her daughter off to college--until she gets the call that Arden's been in a terrible fire, along with her best friend and cousin, Rory. Both girls are critically injured and another student has died. The police suspect arson. Arden and Rory have always been close, but they have secrets they've never shared, secrets that reel all the way back to their childhoods, and which led them to that tragic night. Who set the fire, and why? As the police dig deep into both the present and the past, Natalie realizes that in order to protect her daughter, she'll first have to find out who Arden really is, even if it means risking everything--and everyone--she loves most.