Mystery Inc. withdraws from solving crimes after botching a case. When Vincent Van Ghoul contacts the gang about an unfinished investigation from Daphne, Shaggy and Scooby's past, the gang springs into action to finish the job that involves catching the 13th Ghost that escaped from the Chest of Demons and is still at large.
Frank Welker
as Scooby-Doo / Fred Jones (voice)
Grey DeLisle
as Daphne Blake (voice)
Matthew Lillard
as Shaggy Rogers (voice)
Kate Micucci
as Velma Dinkley (voice)
Noshir Dalal
as Benny / Flim Flam (voice)
David Herman
as Sheriff (voice)
Maurice LaMarche
as Vincent Van Ghoul / Bernie Alan / Vance Linklater (voice)
Nolan North
as Asmodeus / Mortifer / Farmer Morgan (voice)
