TVLINE.COM – If you plan on checking out ABC Family/Freeform’s Shadowhunters (Jan. 12, 9/8c), you’ll need to brush up on your demon-slaying vocabulary first.

Fortunately, TVLine has an exclusive behind-the-scenes feature, in which the key players of the supernatural series — Dominic Sherwood, Katherine McNamara, Matthew Daddario, Harry Shum Jr. and author Cassandra Clare — break down a few of the (many) new words you’ll encounter in the Shadow World, including “shadowhunter,” “rune,” “stele” and “warlock.”