The Thirteen Keys of Corvynne Hall

Synopsis:

Every ten years, Corvynne Hall admits twelve students into the Arcanum, a secret magical society cloaked in academic prestige. But this year, something is wrong: one of the chosen students, Briony Knox, wasn’t supposed to be selected. She’s a scholarship student with no magical background, no significant bloodline, and no idea why her name is on the list. When mysterious deaths begin targeting her cohort, Briony must uncover the truth behind the Twelve Keys, a series of arcane trials, and why someone or something is suddenly willing to kill.