Cassandra Clare's Mortal Instruments has become a movie that has EVERYTHING in it

Cassandra Clare's Mortal Instruments novels have a huge following of teenagers and adults, but how will they translate to the big screen? We saw a smidgen of new footage here at Wondercon, which drove home the fact that this movie basically has everything in it. There's enough stuff for 10 movies. Spoilers ahead...

So we didn't see any actual scenes from Mortal Instruments: City of Bones, but we did see a new trailer, which was about half stuff from the trailer you already saw. There was all the stuff about Clary Fray (Lily Collins) having a normal life in the city, until she sees a demon killed in front of her in a crowded nightclub — and then she's plunged into a world of intrigue and demons and monsters and tattoos and crazy shit, basically. Her mother is kidnapped, and she learns that her mother was a Shadowhunter, and so is she.

But then there were more shots of the library and the demons attacking, and Clary has a close encounter with a tentacle monster that turns into smoke when Jace (Jamie Campbell Bowers) kills it. And then there are monstrous creatures saying that the world is "ours to take," and humanity is on the brink of extinction. Someone tells Clary that Jace thinks he needs to save the world, but she shouldn't encourage him.

It all leads to a big set piece where our heroes are trapped in a big banquet hall with a ginormous crowd of demons, massively outnumbered. Until Nathan from the TV show Misfits pops up and announces, "The werewolves are here to save us! I never thought I'd ever say that." And indeed, werewolves burst in and fight the demons. Because this movie has everything. Honestly, I'm there just for Nathan from Misfits.

Cassandra Clare was there, along with the main cast, and she talked about how amazing it was to see all of the stuff she wrote about in her book, brought to life — including the library, the City of Bones and Magnus Bane's party. For that party, she got to be an extra, wearing cat ears that would not come off afterwards, so she had to go through airport security with permanent cat ears, which the TSA had a lot of questions about. She was excited to see the Silent Brothers, who are giant men covered with prosthetics, with their eyes and mouths sewn shut — and then watch them during meal breaks, sipping from juice boxes because they couldn't eat on set.

Collins was a big fan of the books, and the character, before she was cast as Clary. Said Collins, "I saw Clary as being this feisty go-getter who never gives up, and every few minutes she's thrown a question of what or why, that makes her question how she grew up... I thought it was important to make her not a victim, so she constantly fights for what she believes in." She had an image of Clary in her head from reading the books, and she wanted to make sure she was a relatable character.

Jamie Campbell Bowers said he wanted to do justice to the character of Jace by making him arrogant and snarky — and yet you see him open up to Clary and let his guard down, and then pull himself back up like a teenager.