A Demon Takes Over Halloween on 'Shadowhunters'

Jonathan (Luke Baines) looks a little worried about the sword in his sisters’ hand in this still from Shadowhunters.

In “The Beast Within”, a demon outbreak in New York City on Halloween becomes a top priority at the Institute, but as the Shadowhunters hunt the demons, Jace (Dominic Sherwood) becomes more worried about Clary (Katherine McNamara).

Meanwhile, Alec (Matthew Daddario) has to juggle the outbreak with his deep concern about Magnus’ (Harry Shum Jr) depression.

Shadowhunters airs TONIGHT, April 15th @ 8PM ET/PT on Freeform.