While mildly spooky, the classic cartoons of the early ’70s always ended with the unmasking of a bad guy in a costume. No real monsters. No paranormal weirdness. That changed as the franchise expanded to include shows such as 1985’s The 13 Ghosts of Scooby-Doo, and it’s a big problem in this live-action feature, which has the violent, occult feel of a Ghostbusters movie. Morally and artistically, it’s a chaotic mess (the lone exception is Lillard, who turns in a very good interpretation of Shaggy). Scooby-Doo seems to have been made by people familiar with the cartoon, but with little affection for it—or for the trusting families of younger children sure to be blindsided by its scary action and joyless satire.