Hell Bent (Alex Stern #2) | Leigh Bardugo

In this dark and gripping sequel to Ninth House, Alex Stern is determined to rescue Darlington from the depths of hell—no matter the cost. As the only mortal to have survived an encounter with the underworld, Alex knows the risks, but she refuses to accept that her mentor and friend is lost forever. With the occult societies of Yale growing more dangerous and her own abilities still evolving, Alex must navigate a treacherous path filled with forbidden magic, ancient rituals, and enemies lurking in the shadows. As she assembles an unlikely team to break open the gates of hell, the price of salvation may be higher than she ever imagined. With deadly secrets and unimaginable horrors standing in her way, Alex will have to decide just how far she is willing to go—and what she is willing to sacrifice—to save the one person who believed in her.