The first time I was declared dead, I lost my past. The second time, I lost my humanity. Now I’m being hunted, and if I die again, my soul is up for forfeit. After enrolling in Peel Academy, an elite supernatural boarding school on the British Isles, the last of the sirens, Gabrielle Fiori, only wants to fit in. Instead, the elixir meant to awaken her supernatural abilities kills her. When Gabrielle wakes up in the morgue 12 hours later, something wicked is awakened in her, something even the supernatural community has never seen before.

Callypso Lillis is a siren with a very big problem, one that stretches up her arm and far into her past. For the last seven years she’s been collecting a bracelet of black beads up her wrist, magical IOUs for favors she’s received. Only death or repayment will fulfill the obligations. Only then will the beads disappear. Everyone knows that if you need a favor, you go to the Bargainer. He’s a man who can get you anything you want … at a price. And everyone knows that sooner or later he always collects. But for one client, he’s never asked for repayment. Not until now. 

Eighteen-year-old Trinity Marrow may be going blind, but she can see and communicate with ghosts and spirits. Her unique gift is part of a secret so dangerous that she’s been in hiding for years in an isolated compound fiercely guarded by Wardens - gargoyle shape-shifters who protect humankind from demons. If the demons discover the truth about Trinity, they’ll devour her, flesh and bone, to enhance their own powers.

My whole world changed when I stepped inside the academy. Nothing is right about this place or the other students in it. Here I am, a mere mortal among gods...or monsters. I still can't decide which of these warring factions I belong to, if I belong at all. I only know the one thing that unites them is their hatred of me. Then there's Jaxon Vega. A vampire with deadly secrets who hasn't felt anything for a hundred years. But there's something about him that calls to me, something broken in him that somehow fits with what's broken in me. Which could spell death for us all.

When Pestilence comes for Sara Burn’s town, one thing is certain: everyone she knows and loves is marked for death. Unless, of course, the angelic-looking horseman is stopped, which is exactly what Sara has in mind when she shoots the unholy beast off his steed. Too bad no one told her Pestilence can’t be killed. Now the horseman, very much alive and very pissed off, has taken her prisoner, and he’s eager to make her suffer. Only, the longer she’s with him, the more uncertain she is about his true feelings towards her, and hers towards him. And now, well, Sara might still be able to save the world, but in order to do so, she'll have to sacrifice her heart in the process.