While 2013's The Mortal Instruments: City of Bones wasn't a breakout hit at the box office, ABC Family is giving the franchise a second shot. The network has ordered a full season of Shadowhunters, a new show based on Cassandra Clare's YA books. "Shadowhunters is a big, epic saga that will resonate with viewers who come to ABC Family for the Harry Potter, Hunger Games, and Twilight franchises," ABC Family president Tom Ascheim said. "A New York Times bestseller for 122 consecutive weeks, with over 35 million copies in print worldwide, Shadowhunters is the perfect story to share with our audience." There's no premiere date yet, but we do know the first season will consist of 13 episodes. Production will begin in May, though no cast members have been announced yet. Lily Collins, Lena Headey, and Jared Harris starred in the movie, though it's highly doubtful they will be back for the series. Stay tuned for more details!