The lesson of Shadowhunters: The Mortal Instruments appears to be if at first you can’t make a cinematic franchise of your YA series work, go to television. The Freeform adaptation of Cassandra Clare’s books has been renewed for a third season, the cast announced on Facebook Live this morning. The film that tackled the same material was dead on arrival, though The A.V. Club’s initial reaction to the show was worse than our take on the movie.