It should be no surprise that I choose Nevernight by Jay Kristoff, which is the first book in the Nevernight Chronicles trilogy. This series is absolutely amazing and I haven't been obsessed with a book series since Harry Potter first came out. This has got a murder assassin school, badass MC, amazing world building, LGBT main characters, and wonderful writing. This series is decidedly NOT YA despite it being shelved that way from time to time. Despite it being written by a male, the females do not fall into the fantasy female tropes. They are written with power, independence, individualized personalities, and ownership of their own bodies. I honestly cannot gush about this trilogy enough! If you're into any of the things I mentioned above, I highly recommend you pick this trilogy up!