Katabasis by R.F. Kuang

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.