Day 04 – Favorite book of your favorite series
Hahamygod. 
From Harry Potter, it's ...the Prisoner of Azkaban; from Sherlock Holmes, it's ...the Hound of the Baskervilles; from the Kenzie/Genarro series, it's A Drink Before the War; and from Lord of the Rings, it's The Hobbit--although if you don't think that that counts, or if you'd rather I stuck to the main trilogy, then it's ...the Two Towers.