When the leaves start to turn and a chill fills the air, there’s no better way to get into the Halloween spirit than with a good old-fashioned mystery. For decades, Scooby-Doo and the Mystery Inc.

Hanna-Barbera Productions has cranked out numerous cartoons over the decades. Many of them have been lost to the annals of time, like "Frankenstein Jr. and the Impossibles," however, there's no ...