There is one thing that Stefan and Damon never told Elena: they had a sister, Damon's twin sister to be exact. The Salvatore brothers believe their sister died in 1855. They get quite a shock when she turns up in Mystic Falls.
Vampire Diaries - Rated: T - English - Family/Romance - Chapters: 30 - Words: 97,649 - Reviews: 433 - Favs: 563 - Follows: 399 - Updated: 2/24/2013 - Published: 1/5/2011 - Stefan S., Damon S., OC - Complete