Cat Adams - Blood Singer (#1-6)

Blood Song (Blood Singer #1)
Bodyguard Celia Graves has definitely accepted her share of weird assignments, both human and supernatural. But her newest job takes the cake. Guarding a prince from terrorists and religious fundamentalists is hard enough, but it seems like the entire supernatural world is after this guy too. When she is betrayed by those she is employed to help, and everything goes horribly wrong, Celia wakes to find herself transformed.

Neither human nor vampire, Celia has become an abomination-something that should not exist-and now both human and supernatural alike want her dead. With the help of a few loyal friends-a sexy mage, a powerful werewolf, and a psychic cop-Celia does her best to stay alive. On the run from her enemies, Celia must try to discover who is behind her transformation . . . before it's too late.

Siren Song (Blood Singer #2)
In Celia Graves’s world, vampires roam the alleys of Tinseltown, street corner psychics have real powers, and cops use memory enhancement spells. But Celia thought she was an ordinary human, albeit one with a clairvoyant best friend and a ghostly little sister.

The vampire attack that made Celia an Abomination forces her to take food in liquid form and gives a whole new meaning to the word “sunburn.” She’s slowly adjusting (therapy sessions and all) when she discovers that the attack awakened a hidden part of her heritage: Celia is part Siren, able to enthral men—and enrage women.

Her best friend’s murder is unsolved; the cops think Celia should be in jail or staked; and her old lover, mage Bruno DeLuca, has something important to tell her. To top it all off, Celia’s been summoned to the Sirens’ island.

Celia Graves has more than one enemy. Some of them want her blood. Some of them want her soul. All of them want her dead.

Demon Song (Blood Singer #3)
In a world where magic is real and the supernatural is almost normal, bodyguard Celia Graves has survived a vampire attack which made her a half-vampire and awakened her latent Siren abilities. She’s battled a Siren Queen to the death and twice faced down a demon that wants to kill her--slowly. She’s also had her heart broken--twice--by her old flame, magician Bruno DeLuca.

Perhaps the worst thing was the discovery that Celia’s life has been warped by a curse laid on her during childhood--the cause of everything from the death of her little sister to the murder of her best friend the same night that Celia became an Abomination.

An ancient rift between the demonic dimension and our own--sealed during the destruction of Atlantis--begins to open, threatening to loose all the demons of hell on humanity (including the one personally bent on destroying Celia). Celia’s hellish recent experiences have given her the unique combination of abilities needed to close the rift. But to overcome the curse, which nearly guarantees her failure, she’ll need to join forces with people she no longer trusts...and put people she has come to care about directly in harm’s way.

The Isis Collar (Blood Singer #4)
Celia Graves was once an ordinary human, but those days are long gone. Now she strives to maintain her sanity and her soul while juggling both vampire abilities and the powers of a Siren.

Warned of a magical “bomb” at a local elementary school, Celia forces an evacuation. Oddly, the explosion seems to have no effect, puzzling both Celia and the FBI. Two weeks later, a strangely persistent bruise on Celia’s leg turns out to be the first sign of a magical zombie plague.

Finding the source of the plague isn’t Celia’s only concern. Her alcoholic mother has broken out of prison on the Sirens’ island; her little sister’s ghost has possessed a young girl; and one of Celia’s boyfriends, a powerful mage, has disappeared.

The Eldritch Conspiracy (Blood Singer #5)
Not every bride needs a bridesmaid who can double as a bodyguard. But Celia's cousin Adriana is no ordinary bride: she's a Siren princess, and she's marrying the king of a small but politically important European country. She's getting death threats from fanatics who want to see the whole Siren race wiped out—including Celia herself, who is half Siren.

Luckily, Celia is on duty when a trip to a bridal salon is interrupted by an assassination attempt, so everyone survives. When Adriana returns to the Siren homeland to try to prevent a coup, Celia is free to hunt for the terrorists and the vile mage who is helping them (while keeping her eyes open for the perfect maid-of-honour dress).

Assuming the bride and groom both live to see their wedding day, this will be one royal wedding no one will ever forget.

To Dance With the Devil (Blood Singer #6)
Celia Graves’s newest client is one of the last surviving members of a magical family that is trapped in a generations-old feud with other magic-workers. She’s supposed to die at the next full moon unless Celia can broker peace between the clans or break the curse before it can take effect.

For the first time in a long while, Celia’s personal life is looking up. Her vampire abilities seem to be under control, her Siren abilities have gotten more reliable, and even though her office was blown up, her services are more in demand than ever now that she's fought off terrorists and been part of the royal wedding of the year. Her friends all seem to be finding love and her grandmother has—finally—agreed to go to family therapy. The only trouble spot is Celia’s love life. Not long ago, she had two boyfriends.

Now she barely has one and she isn’t sure she wants him. But Bruno DeLuca is a powerful mage and Celia needs his help . . . especially after she's attacked and her client is kidnapped.