Katabasis By R. F. Kuang

Katabasis, noun, Ancient Greek. The story of a hero's descent to the underworld. Grad student Alice Law has only ever had one goal: to become the brightest mind in the field of analytic magick. But the only person who can make her dream come true is dead and – inconveniently – in Hell. And Alice, along with her biggest rival Peter Murdoch, is going after him. But Hell is not as the philosophers claim, its rules are upside-down, and if she’s going to get out of there alive, she and Peter will have to work together. That’s if they can agree on anything. Will they triumph, or kill each other trying?