'The Mortal Instruments' Teaser Trailer Hits the Web [PHOTOS & VIDEOS]

The day that all fans of Cassie Clare have been waiting for has finally arrived. "The Mortal Instruments: City of Bones" teaser trailer has hit the web causing fan girls and boys from far and wide to scream in delight. For those who haven't heard of the phenomenal world of Downworlders and Shadowhunters, read on to find out more.

"Harry Potter" and "Twilight" may have caught the attention of a few good book readers but the time has come for something totally new. With the magic of "Harry Potter" having end last year and "Twilight" coming to a complete finale this November, fans are expecting a whole new different world authors and movie makers have to offer.

Thankfully, fans of such awesome books need not wait any longer. While "The Hunger Games: Catching Fire" is a long wait, there's another book turned movie that is also worth the look out. Introducing the world of Downworlders and Shadowhunters, Cassie Clare takes readers to different heights with angels, demons, fairies, werewolves, vampires and the mundane in "The Mortal Instruments: City of Bones." The book turned to film synopsis is as follows:

"Set in contemporary New York City, a seemingly ordinary teenager, Clary Fray (Lily Collins), discovers she is the descendant of a line of Shadowhunters, a secret cadre of young half-angel warriors locked in an ancient battle to protect our world from demons. After the disappearance of her mother (Lena Headey), Clary must join forces with a group of Shadowhunters, who introduce her to a dangerous alternate New York called Downworld, filled with demons, warlocks, vampires, werewolves and other deadly creatures. Based on the worldwide best-selling book series."

A teaser trailer has finally been released worldwide giving other book readers who haven't heard of the novels to catch up on the hype. The film stars "Mirror, Mirror's" Lily Collins and "Twilight's" Jamie Campbell-Bower. As for fans that have already been keeping track of the world of Shadowhunters, better mark those calendars by August 23 of which the first film out of six novels will be hitting cinemas worldwide. For now, take a look at the teaser trailer below and check out the official movie poster on the slideshow.