If you thought the Oz story begins and ends with The Wonderful Wizard of Oz, you're in for a pleasant surprise. L. Frank Baum penned an entire series dealing with this fantastical — and sometimes terrifying — wonderland. Tik-Tok of Oz, the eighth book in the original series, follows the adventures of a young girl from Oklahoma who lands in Oz via a shipwreck and meets up with a strange character called The Shaggy Man.