Scooby Doo 3 - The Scariest Halloween

Scooby-Doo 3: The Scariest Halloween is a sequel to Scooby Doo: Monsters Unleashed. It is directed by James Wan and Raja Gosnell. The film stars Nick Palatas, Haley Kiyoko, Kate Melton, Robbie Amell and Frank Welker. The film also stars Benedict Cumberbatch (Star Trek: Into Darkness), Robert Downey Jr (Iron Man 3) , Ty Simpkins (Iron Man 3) , Bradley Steven Perry (Disney XD's Mighty Med) , Stephen Amell (CW's Arrow) and Elizabeth Banks (The Hunger Games: Catching Fire).

Cast

 * Nick Palatas as Shaggy Rogers
 * Hayley Kiyoko as Velma Dinkley
 * Kate Melton as Daphne Blake
 * Robbie Amell as Fred Jones
 * Frank Welker as Scooby-Doo (Voice)
 * Ty Simpkins as Peter Rogers Shaggy's brother and Mystery Inc's tech wizard
 * Bradley Steven Perry as Bruce Grayson Jack Grayson's son and Mystery Inc's scientist

​Suspects

 * Robert Downey Jr as James Cedrick III A wealthy buisnessman who is best friends with Mystery Inc.
 * Elizabeth Banks as Samantha Hunt Former girlfriend of Fred Jones and wife of Jack Grayson.
 * Stephen Amell as Jack Grayson Husband of Samantha Hunt, father of Bruce Grayson and famous horror writer.
 * Matt Damon as Jacob Phillips FBI agent and Fred's best freind. Helps Mystery Inc with their mysteries.
 * Dr James Hardy Scientist, culprit and real Halloween Wizard (has same powers like Regular Show's Halloween Wizard)
 * William Jones Detective and culprit

​Culprits

 * Benedict Cumberbatch as William Jones He is a detective who wants revenge on Jacob Phillips. In the end, gets arrested.
 * Guy Pearce as Dr James Hardy He helped Jones with the plan. He is also the real Halloween Wizard. In the end, gets arrested.
 * Ben Kinglsey as Bryce Slattery & The Halloween Wizard A actor who portrayed the Halloween Wizard. In the end, he was arrested.

Clues

 * Video Camera
 * Script for The Halloween Wizard's lines
 * Cupboard full of SXZK
 * Props for the Halloween Wizard

Plot
TBA