Entertaining - with the return of the REAL voice actors
I'm sure Frank Welker, Grey DeLise, and Matthew Lillard could do Fred, Scooby, Daphne, and Shaggy in their sleep. Of course, pros that they are they never sound it, and their work here is faultless. Kate Micucci has proven a fine Velma since she took over in 2015, and this outing is her best yet; knowledgeable without being know-all, firm yet friendly - and sassy. She really gets to shine.
Elvira, Mistress of the Dark and Bill Nye the Science Guy are entertaining guests. And the inclusion of Batman villain Dr. Jonathan Crane/Scarecrow (voiced by Dwight Schultz) gives a nice link to the DC universe. The movie does suffer from too many road chases, making the whole thing feel a little drawn-out, and for me pumpkins aren't scary - or even that exciting - as monsters. But it has top notch animation, witty dialogue, and incidental music with more than a hint of John Carpenter. 7.5/10