What a ride! I went into this book knowing almost nothing, and I think that was the right way to go so I shall not summarize the plot. This is the first book of a series; it's ambitious, it's weird, it's got a very large and extremely diverse cast; it is such a fresh and original take on a contemporary sci-fi in which the world realizes that monsters, gods, and magic have existed all along. I worried a little in the first third that the book maybe had too many POV characters, most of whom seemed very unconnected from each other except by geographical proximity to either Cambridge, Mass, or the island of St Thomas. However by the end almost all of the characters had been at least tenuously linked by plot events in a way that really worked for me. The book also has trans, nonbinary, asexual, queer, and poly characters whose identities are only revealed slowly, and usually after you've known the character for a while. I am very impressed by the scope of this story and definitely plan to continue with the series.