Highlight Shadowhunters' Katherine McNamara on the Final Season Syfy Insider Exclusive Create a free profile to get unlimited access to exclusive videos, sweepstakes, and more! Sign Up For Free to View Shadowhunters' Katherine McNamara on the Final Season Based on The Mortal Instruments series by Cassandra Clare. Season 3 wraps up on May 6, 2019 Watch the Full Episode
