With the Twilight sequels currently filming, we're wondering which book series will be the next to hit the big screen.
Industry analysts were caught off-guard by Twilight, underestimating how screaming teenage girls can influence box office.
With studios clamouring to bite off a piece of the teen-lit action, book properties are being gobbled up faster than you can say 'Robert Pattinson'.
Here's the books we're tipping to be the next big crossover movie sensations...
Author: Justin Somper
The pitch: Grace and Connor are recently orphaned twins living in Australia. Not wishing to be taken into adoptive care, they set sail on their father’s boat.
When the boat sinks, the twins are rescued by two very different vessels; Connor by the pirate ship Diablo, Grace by the Vampirate ship Nocturne.
The pedigree: The Vampirates series has been in publication since 2005, and has built up a dedicated following.
In case you missed it - yes, 'Vampirates'. That's pirates who are also vampires.
Books in series: Four, plus one short story
Web presence: 35,100 hits on the Googles.
Big screen potential: Pirate vampires? Can we book our tickets now?