In this animated adventure, the Mystery Inc. gang embarks on a chilling journey to a creepy castle in Pennsylvania after Velma inherits it from a mysterious uncle. As they delve into the eerie surroundings, they encounter a series of strange occurrences and a legendary monster that threatens their investigation. The film features the beloved voices of Frank Welker, Mindy Cohn, and Grey DeLisle, bringing the iconic characters to life. Directed by Paul McEvoy, this installment offers a blend of humor and suspense, staying true to the franchise’s spirit. For those interested, it can be viewed for free on 123Movies / Movies123.