Bloodlines series

Bloodlines is a companion spin-off series of the Vampire Academy series, written by Richelle Mead.

Overview
This spin-off series centers around Sydney the Alchemist, a human teen who's part of a group to keep the existence of vampires secret from the world. Sydney's spent her entire life being taught that vampires and dhampirs are evil and unnatural, but all that's about to change when she's forced into hiding with Jill, Adrian, and Eddie.

Books

 * 1) Bloodlines (2011)
 * 2) The Golden Lily (2012)
 * 3) The Indigo Spell (2013)
 * 4) The Fiery Heart (2013)
 * 5) Silver Shadows (2014)
 * 6) The Ruby Circle (Feb. 10, 2015)

Bloodlines blurb
Sydney is an alchemist, one of a group of humans who dabble in magic and serve to bridge the worlds of human and vampires. They protect vampire secrets - and human lives. When Sydney is torn from her bed in the middle of the night, at first she thinks she's still being punished for her complicated alliance with dhampir Rose Hathaway. But what unfolds is far worse. Jill Dragomir - the sister of Moroi Queen Lissa Dragomir - is in mortal danger, and the Moroi must send her into hiding. To avoid a civil war, Sydney is called upon to act as Jill's guardian and protector, posing as her roommate in the last place anyone would think to look for vampire royalty - a human boarding school in Palm Springs, California. But instead of finding safety at Amberwood Prep, Sydney discovers the drama is only just beginning.

Awards
1. Bloodlines 2. The Golden Lily 3. The Indigo Spell 5. Silver Shadows 6. The Ruby Circle
 * 2011 Goodreads Choice Awards
 * Finalist of the
 * "Best Young Adult Fantasy & Science Fiction" category
 * Nominee of the
 * "Best Goodreads Author" category
 * "Favorite Book of 2011" category
 * Finalist of the 2012 Goodreads Choice Awards
 * "Best Young Adult Fantasy & Science Fiction" category
 * "Best Goodreads Author" category
 * Finalist of the 2013 Goodreads Choice Awards "Best Young Adult Fantasy & Science Fiction" category
 * Finalist of the 2014 Goodreads Choice Awards "Best Young Adult Fantasy & Science Fiction" category
 * Nominee of the 2015 Goodreads Choice Awards "Best Young Adult Fantasy & Science Fiction" category