A series of fantasy books written by Cassandra Clare.
The books are about a species called Shadowhunters who can't be seen by ordinary mundanes (humans) and destroy demons and rogue Downworlders. Downworlders are werewolves, vampires, faeries, warlocks, etc.
The main characters are Clary Fray, Jace Wayland and Simon Lewis.
Person 1: Have you got the new The Mortal Instruments book?
Person 2: Yeah, it's awesome!
An absolutely awesome series written by Cassandra Clare. It has everything! (demon fighting, canon slash, technical incest, faeries, werewolves, geeky references, etc.) The Fandom is one of the most perverted ones. We have great fanart. And a duck!
Person A:Have you read City of Bones yet?
Person B: No, I've never heard of it!
Person A: It's the first book in the Mortal Instruments series. I think you would like it!