Bloodlines is a spin-off series of the Vampire Academy series written by Richelle Mead. The series follows Sydney Sage, an Alchemist who is assigned to protect Jill Dragomir, a Moroi princess and the illegitimate half-sister of the new Moroi Queen, Vasilisa Dragomir.Jill, Sydney and Jill's dhampir guardian Eddie Castile enroll in the human boarding school, Amberwood Prep. However, they are not as safe as they initially thought. The books, in order of publication:
Badass Longcoat: Dimitri, when he rescues Sonia and Sydney twice, one in the alley, and one at the vampire hunters compound. Sydney recongizes his coat.
Back from the Dead: Jill, who was brought back by Adrian after getting killed during the first attempt on her life. Also, Lee comes back from being Strigoi.
Being Personal Isn't Professional: The alchemists, in a big way. Their jobs are their number one duty, and since they feel Moroi, Strigoi, and Dhampirs are evil creatures, it's against an alchemist's upbringing to socialize with them. In the rare cases they lighten up, they often revert back to being professional once they realize it.
Berserk Button: Do not threaten or harm anyone Sydney cares about. She'll make you pay dearly for it.
Big Damn Heroes: Eddie and Jill bursting through the door to save Sydney and Adrian.
Trey and Angeline (unknowingly followed by Jill) coming to save Sydney, Eddie and Neil.
Bookworm: Sydney and Brayden.
Came Back Wrong: Lee. He misses being a Strigoi so much that he's killed lots of people (including his own cousin) so he could turn back again, though he fails.
Cerebus Retcon: Aspects of Sydney and Adrian's characterisation that were generally seen as amusing in the previous series are revealed here to be due to serious mental issues. Sydney's tendency not to eat is revealed to be due to body issues caused by her abusive father, with Adrian even lampshading that her not-eating isn't a 'cute quirk'; in turn, Adrian's buying Rose a massive box full of perfumes shortly after meeting her is due to his bipolar disorder.
Chekhov's Gun: the amulet that Sydney has to make for Ms. Terwilliger turns out to have quite a bit of significance later.
Cliff Hanger: The ending of Fiery Heart definitely counts as this.
Compliment Backfire: Brayden, on Sydney's Halloween costume. He tells her she looks very pretty, but later argues the costume isn't historically accurate, and then admits she could be dressed like a prostitute. Adrian actually tricks him into admitting it using a Bait and Switch, and then tries to get into an argument with Brayden over it.
Elaborate University High: Amberwood Prep, not only does it have a campus for boys and girls, both with cafeterias, but it also has a central campus where all classes are held, and administration is at.
Elemental Powers: The Moroi have these, each excelling at either earth, air, water, fire or, to a rare extent, spirit.
Everyone Is Related: The claim of siblings (and cousin) is used to explain why Sydney, Eddie, Jill & Angeline are always hanging out together at school, and why Keith and Adrian are often around.
Fantastic Racism: The Alchemists see the Moroi and dhampirs as unnatural and evil despite the fact the the Moroi and dhampirs are mortal beings like humans. If an Alchemist is seen being even remotely friendly and sympathetic to a Moroi or dhampir, their loyalties are questioned. Not to mention they might be sent to a re-education centre for it.
Horrible Judge of Character: Sydney's father is so fond of Keith that he fails to see how immoral he really is. On the other hand, he fails to see Sydney for how loyal, talented and dedicated she is.
Hell, Sydney's father even seems to be this to himself, thinking he was actually being caring all this time towards his daughters.
Intelligence Equals Isolation: Sydney's intelligence has always set her apart from others. Even at an elite boarding school, she's way beyond everyone else's capacity, and has to dumb things down to relate. It gets better.
Must Have Caffeine: Sydney, to the point she names her car Latte and keeps a one cup coffee maker in her dorm room. Almost every time she drinks something, it's coffee.
Power Tattoo: The Alchemists have tattoos that stop them from talking about vampires and their own organisation. The tattoos also give them a better immunity system than normal humans. Many students at Amberwood Prep also get these tattoos without the knowledge of the Alchemists. The tattoos either give them an athletic boost or work to make them feel high.
The Reveal: Bloodlines has a few of these, particularly about Sydney, Abe and Keith's history.
Romantic False Lead: Brayden who turns out to be perfect for Sydney: he's smart, good looking, works in a coffee shop, drives a nice car, and thinks windmill tours and textile museums are a good time. Too bad he's not the one.
Royal Blood: Jill, who recently found out she's a princess.
The Alcoholic: Adrian, who drinks to calm down his spirit magic, and to help Jill, since when he's drunk enough, the bond is numbed.
The Slacker: Adrian, who comes from a moneyed background and has never set out to accomplish much of anything. Coming to California for Jill and taking painting classes are the most responsible things he's ever done.
Vampire Hunter: Alluded to in Bloodlines and the primary story line of The Golden Lily. A group of vampire hunters are out to destroy Strigoi, and aren't too concerned if Moroi get hurt in the process.