The Boy Next Door takes an interesting turn when, while Kevin is with his dad for the weekend, Claire finds herself sharing a late evening with her teenage neighbor. The two end up having a one-night tryst, which Claire immediately regrets the following morning. Noah doesn’t take the day-after rejection too well and soon reveals a side to his personality that is ruthlessly diabolical.
Noah makes it his life’s mission to make Claire pay for rejecting him. The Boy Next Door sees Noah work to drive a wedge between Kevin and Garrett while still lurking around Claire. As her rejections continue, it’s revealed to Claire that Noah secretly recorded their encounter, and he’s not going to be shy about the evidence that’s in his hands.