[1] It follows the story of narrator Sydney Sage, the alchemist who helped Rose in Blood Promise, Spirit Bound and Last Sacrifice.

[3] After helping rogue Dhampir Rose Hathaway evade justice, Sydney Sage's situation with the Alchemists is shaky at best.

Woken in the middle of the night, Sydney is given a last chance: to pose as the older sister of Jill Dragomir ( illegitimate sister of Vasilisa Dragomir ) at a boarding school in Palm Springs California and assists Keith the alchemist whom she hates and also studied with Sydney's father to conceal her identity to those who oppose Vasilisa.

Lee takes the whole squad mini-golfing and Jill uses her water magic much to Sydney's disdain, as it freaks her out reminding her of her alchemist training that Moroi are unnatural creatures made from evil.

After talking to her friends, Sydney discovers that the tattoos are given by a place called Nevermore and she finds vials of Moroi blood and saliva along with copper and silver.

When visiting Adrian, Sydney sees a needle sized hole in Clarence's neck and deduces that Keith has been supplying Nevermore.

Lee also wishes to be turned back into a strigoi, but is unable to and he's the reason for all of the unknown deaths in Palm Springs including that of his cousin.

Critical reception for Bloodlines has been positive,[4][5] with UT San Diego writing that it "stands out from the crowded vampire genre because it's not centered on a human-vampire romance".