The remainder of Season 3 picks up with everyone trying to move on as they deal with the loss of Clary. Per Freeform’s official description: Unbeknownst to them, the Shadowhunters face a new level of evil that they can’t even imagine with the arrival of Jonathan Morgenstern (Luke Baines), the true form of Clary’s brother.
With the loss of Clary after Lilith’s apartment exploded, Alec, Isabelle and Jace try to come to terms with what has happened. Glad to have their brother back, Alec and Isabelle are still worried about Jace, who is taking the actions of The Owl very hard. Magnus is also mourning the loss of his magic and finds himself in a new position—having to rely on others for help.
Meanwhile, Maia tries to help a devastated Simon who has lost his family and his best friend. But unknown to everyone, Clary is alive and finds herself in a new and dangerous predicament.
Katherine McNamara stars as Clary Fray, Dominic Sherwood as Jace Wayland, Alberto Rosende as Simon Lewis, Emeraude Toubia as Isabelle Lightwood, Matthew Daddario as Alec Lightwood, Isaiah Mustafa as Luke Garroway, Alisha Wainwright as Maia Roberts, and Harry Shum Jr. as Magnus Bane.
Shadowhunters, which airs at 8 PM, is produced by Constantin Film and executive produced by Todd Slavkin, Darren Swimmer, McG, Matt Hastings, Mary Viola, Martin Moszkowicz and Robert Kulzer.