Origins by L.J. Smith

The year is 1864 and the Civil War rages on. But seventeen-year-old Stefan Salvatore is fighting a battle all his own. Engaged to marry someone he does not love, Stefan falls for a mysterious girl named Katherine. With her gleaming curls and mischievous brown eyes, Katherine is beautiful and seduction…but she also harbors a dark secret: She’s a vampire.

Based on the popular CW TV show inspired by the bestselling novels, Stefan’s Diaries reveals what really happened between Stefan, Damon, and Katherine—and how the Vampire Diaries love triangle began.