Nightfall

Why these tropes fit

Nightfall is the final installment in Penelope Douglas's Devil's Night romantic suspense series. Set in Blackchurch, a secluded and undisclosed mansion where wealthy families send their misbehaving heirs, the story follows Emory, a quiet woman who carries guilt over past dark events called "Devils Night" that included videos and arrests, and Will Grayson, a reckless, untamed young man held as one of five "prisoners" at the estate. Emory and Will share a tense high school history—he publicly tormented and cornered her while privately protecting her. When Emory is unexpectedly smuggled into Blackchurch, she hides inside while Will emerges from his confinement harboring a revenge plan and forming an alliance with the other inmates. Confined together in the remote estate for an unsupervised month with no one to stop them, the two must reconcile their painful, complicated past while navigating their forced, close-quarters present.