Court of Night (Shadow Fae Book 3) by C.N. Crawford

As a Knight of the Shadow Fae, I’m tasked with defending the Institute. I’m deep into a world of dark magic, orgiastic death cults, and demon roller discos. But my new life begins with an impossible choice: turn over Ruadan within twenty-four hours, or my nemesis will unleash the Black Death. Worse, my old gladiator master is threatening to reveal my identity. If the truth gets out, I’ll be out of the Institute faster than you can say "wrath of an incubus." If I can't find and kill my oldest enemy in time, then it's the Black Death for everyone, and I’ll be back on the run once more.

Court of Darkness (Shadow Fae Book 2) by C.N. Crawford

I would not say things are going well, exactly. I live in a burnt-out car under a bridge, surrounded by rubbish. When Ruadan shows up to bring me back to the Institute, I leap at the chance. That is, until he throws me into the dungeons. I’m on the naughty list, and the mentor who once trained me is cold as ice. Now, I must pass every single trial, or the Institute’s executioners will rip me to pieces. Good thing I can handle it. I was the queen of the gladiator ring, and I do not go down easily.

Court of Dreams (Shadow Fae Book 4) by C.N. Crawford

Exiled from the Shadow Fae, I'm left out on London's streets. The Knights of the Institute are dying of the plague, and they're sure I'm to blame. Desperate to speak to Ruadan, I invade the Institute. Then, things take a turn for the worse. Like, "tortured in a tiny prison cell" worse. Seems like Ruadan has completely betrayed me. But when I finally reunite with my dark demigod, it turns out I'd totally misunderstood his actions. Once I'm out of jail, Ruadan and I have to fix this mess, and we're thrown together once again. That means finding my father. Plus, we have to kill Baleros before the monster gets what he's after: the skin off Ruadan's corpse. If Baleros gets what he wants, then he'll control the world, and I'll lose Ruadan forever.

Court of Shadows (Shadow Fae Book 1) by C.N. Crawford

Rags to riches is supposed to be a nice fantasy. Going from a cheap London hovel to an elite fae institute should be amazing, especially when it involves a medieval castle. It's just not so great when the aristocratic jerks in the Tower want to crush you. It starts when a lethally gorgeous fae--Ruadan--hunts me down. He's known as the Wraith, and he's taken a vow of silence to snuff out illegal magic. Fae magic that I possess. The Wraith lets me live on one condition: I have to earn my place at the Court of the Shadow Fae. I'm a survivor. I think I can manage the competition. Too bad the posh recruits have it in for me. Worse, I'm forced to share a room with the silent Wraith, who is as sinister as he is hot. All it takes is one slip up, and I'm out. And at the Court of the Shadow Fae, failure means death. This series is linked to the Sea Fae series but can be read in any order.