Isabelle (Emeraude Toubia) gets intimately close with Simon (Alberto Rosende) in this still from tonight’s Shadowhunters.

In “City of Glass”, Alec (Matthew Daddario), Jace (Dominic Sherwood) and Isabelle make a plan to finally get Clary (Katherine McNamara) back and stop Jonathan – much to Luke’s (Isaiah Mustafa) and Simon’s chagrin.

Meanwhile, an emotionally raw Magnus (Harry Shum, Jr.) struggles to deal with his father’s reappearance and Maia (Alisha Wainwright) must make a tough decision that could affect the rest of her life.

Shadowhunters airs TONIGHT, April 29th @ 8PM ET/PT on Freeform.