While The House in the Cerulean Sea is a YA book it's also a perfect fit for adults who usually don't enjoy this genre. It's a magical fantasy book with a fantastically written story filled with mysteries, amazing LGBT+ characters, and lines that will make you laugh out loud.
The story is about Linus Baker who is kind of a hermit living alone with his not so well behaved cat. His life, however, forever changes when the Department in Charge Of Magical Youth sends him to his new assignment where he has to decide if a group of young orphans will or will not bring the end of the world.
If you're looking for a really great new fantasy book you should check out this one.