The Short Second Life of Bree Tanner:

Fans of The Twilight Saga will be enthralled by the riveting story of Bree Tanner, a character introduced in Eclipse, and the darker side of the newborn vampire world she inhabits. In another irresistible combination of danger, mystery and romance, Stephenie Meyer tells the devastating story of Bree and the newborn army as they prepare to close in on Bella Swan and the Cullens, following their encounter to its unforgettable conclusion. 'I'm as surprised as anyone about this novella,' said Stephenie Meyer. 'When I began working on it in 2005, it was simply an exercise to help me examine the other side of Eclipse, which I was editing at the time. I thought it might end up as a short story that I could include on my website. Then, when work started on The Twilight Saga: The Official Guide, I thought the Guide would be a good fit for my Bree story. However, the story grew longer than I anticipated, until it was too long to fit into the Guide.