In the clip from the episode airing on Freeform on Monday, June 11, Alec (Matthew Daddario) goes to see his fiancé, Magnus (Harry Shum Jr.), who seems more than a little suspicious.

Magnus Bane, meanwhile, will again prove his loyalty to Alec when he is approached by the gay shadowhunter to save Isabelle, who is arrested for the Meliorn mission.