After solving their last mystery at Spooky Island, the Mystery Inc. gang is back in Coolsville, where they are being honored with their very own exhibit at the Coolsonian Criminology Museum. However, when a masked villain steals costumes of classic monsters on display and brings them to life, the gang must come out of retirement to solve the case.
Freddie Prinze Jr.
Sarah Michelle Gellar
Matthew Lillard
Linda Cardellini
Neil Fanning
Seth Green
Peter Boyle
Tim Blake Nelson
Alicia Silverstone
Pat O'Brien
Bill Meilen
Zahf Paroo
Chris Gauthier
Peter New
Morgan Brayton
Lisa Ann Beley
Tara Fynn
Brandon Jay McLaren
Aaron Ydenberg
Joe MacLeod
Lou Bollo
John Ulmer
Bradley Gosnell
Calum Worthy
Brenna O'Brien
Mark Burgess
Kwesi Ameyaw
Ted Kozma
Darrell Lee-Izeard
Stephen E. Miller
Karin Konoval
Paul Jamieson
Andrew McIlroy
Colin Foo
Andrew Jackson
Nazanin Afshin-Jam
Cascy Beddow
Emily Tennant
Ryan Vrba
Lauren Kennedy
Jeff Tanner
A.C. Peterson
Dan Joffre
Richard Dietl
Bill Mondy
Kimani Ray Smith
Catherine Lough Haggquist
Ingrid Torrance
Tiffani Timms
Scott McNeil
Kevin Durand
C. Ernst Harth
Christopher R. Sumpton
Ruben Studdard
Dee Bradley Baker
Bob Papenbrook
Michael Sorich
Terrence Stone
J.P. Manoux
Wally Wingert