Much like the show, this book is pretty silly (and told from the perspective of Hunson Abadeer, Lord of Evil and Marceline's dad). I'm not caught up with the whole series, so there were a few spoilers in here, mostly in the form of introductions to characters I hadn't seen yet. It's a good encyclopedia with profiles of characters (whole chapters for main characters and blurbs for minor ones) and places (e.g. Candy Kingdom and Lumpy Space), a map of the Land of Ooo, and some extras. And "handwritten" annotations by Finn, Jake, and Marceline.

It's not a book that I could read from linearly cover to cover, but it'll be fun to revisit and reference as I finish watching the more recent seasons. Gonna leave it out on the coffee table for browsing.

Oh, and, A for all the illustrations inside! ( )

I'd highly recommend this book to any hardcore fan of the series. It presents information about the wonderful land of OOO and its inhabitants in a fun, creative way. The book is a must have for any serious fan.