On the one hand, this book is incredibly nerdy (who reads psychological essays about their favorite show besides me?) and on the other, it is completely engrossing and thought-provoking; I mostly loved The Psychology of Dexter. A couple of the essays were very dry or not very stimulating, but most were very clever and enjoyable. Overall, if you are a fan of the show and wonder just HOW you can be rooting so heartily for a serial killer or just need your Dexter fix between seasons, try this.
P.S. I want to write my own psychological essay about the brilliance of the title sequence which begins every episode. It is absolutely perfect (and never fails to make me hungry!)