It's the worst winter Mount Vernon has seen in decades, and the Big One - the epic blizzard that the weatherman has been predicting for weeks - has finally hit, making virtual prisoners of the town's residents. Abraham is forced to come to terms with his deception and his deteriorating relationship with Brenna while being snowed in with the one person he can't afford to get close to. Stuck at the police station, Duke must decide between a future with Kelly and the life he loves. Trapped in the Woodward Opera House, Brenna and Van must stay one step ahead of a killer holding a grudge against Van for stepping into the coveted role vacated by an injured Nick Anders. In one night, loyalties will be tested, secrets will be revealed, and everything will change.