Robert Pattinson, Kristen Stewart and Taylor Lautner have been talking battle scenes and happy endings as they reveal details of the final film in the Twilight Saga, Breaking Dawn - Part 2.

The stars of the hit vampire movies were speaking at Comic-Con in San Diego and treated about 6,000 fans to a surprise look at the first seven minutes of the final installment of the film.

Speaking at the event Robert revealed a bit more about what happens in the movie: "It's slightly different from the book, because there isn't a battle scene in the book.

"And I remember reading it and people started dying and everything. I was like 'what!?', I suddenly thought this was the strangest ending to the series that I could have possibly imagined. I was kind of amazed by it."

Kristen said she believed it was the right time for the films to come to an end: "Somebody was just asking me where the story would go if it were to keep going and I think we've done our job right in that I think it would be really boring. They're happy. They're done. Like, there are no more challenges for them."

Breaking Dawn - Part 2 is released on November 16.