Matthew Daddario & Isaiah Mustafa Join 'Shadowhunters' Cast

Matthew Daddario and Isaiah Mustufa have been added onto the 'Shadowhunters' cast set to air on ABC Family in January 2016. Shadowhunters is based on the bestselling series The Mortal Instruments by Cassandra Clare. 

Daddario has been chosen to play the role of Alec Lightwood, the brother of Isabelle and Parabatai of Jace. 

Exciting news! @MatthewDaddario will play Alec Lightwood on #Shadowhunters!!!! pic.twitter.com/iY48034iIS

— Shadowhunters (@ShadowhuntersTV) May 8, 2015

Mustafa casted as Luke Garroway, an NYPD detective as well as the leader of the werewolf pack.

Exciting news! @isaiahmustafa will play Luke Garroway on #Shadowhunters!!!! pic.twitter.com/XC9sK23zdd

— Shadowhunters (@ShadowhuntersTV) May 8, 2015

Check out these exclusive videos from @ShadowhuntersTV of Daddario and Mustafa thanking the fans for the support:

I can't wait to play Luke! ❤️ @isaiahmustafa #Shadowhunters pic.twitter.com/h8gk3JHPQs

— Shadowhunters (@ShadowhuntersTV) May 9, 2015

Thanks for all the love so far, #Shadowhunters fans! - @MatthewDaddario pic.twitter.com/kLcRjuAJHn

— Shadowhunters (@ShadowhuntersTV) May 10, 2015

ABC Family has previously announced Katherine McNamara as 'Clary Fray', Dominic Sherwood as 'Jace Wayland', Alberto Rosende as 'Simon Lewis' and Emeraude Toubia as 'Isabelle Lightwood'.