Hawthorne College is quieting down for the holidays. But as Riley Stone (Imogen Poots, Green Room) and her Mu Kappa Epsilon sisters-athlete Marty (Lily Donoghue, The CW's Jane the Virgin), rebel Kris (Aleyse Shannon, The CW's Charmed), and foodie Jesse (Brittany O'Grady, Fox's Star)-prepare to deck the halls with a series of seasonal parties, a black-masked stalker begins killing sorority women one by one. <p> As the body count rises, Riley and her squad start to question whether they can trust any man, including Marty's beta-male boyfriend, Nate (Simon Mead, Same But Different: A True New Zealand Love Story), Riley's new crush Landon (Caleb Eberhardt, Amazon's Mozart in the Jungle) or even esteemed classics instructor Professor Gelson (Cary Elwes). <p> Whoever the killer is, he's about to discover that this generation's young women aren't about to be anybody's victims.