After the death of Shaggy's Uncle Beaureguard, he, Scooby and Scrappy arrive at the late uncle's Southern plantation to collect the inheritance. But as soon as they arrive, they find it is haunted by the ghost of a Confederate soldier. With this spook on their tails while they solve riddles in search of the inheritance, they seek help from the Boo Brothers, a trio of ghost-exterminators to help catch this nasty ghoul.
Casey Kasem
as Shaggy Rogers (voice)
Don Messick
as Scooby-Doo / Scrappy-Doo (voice)
Rob Paulsen
as Shreako / Dispatcher (voice)
Ronnie Schell
as Freako / Demonstrator Ghost (voice)
Jerry Houser
as Meako (voice)
Sorrell Booke
as Sheriff Rufus Buzby / T.J. Buzby (voice)
Arte Johnson
as Farquard / Skull Ghost (voice)
William Callaway
as Billy Bob Scroggins / Beaureguard / Horseman / Ape (voice)
Victoria Carroll
as Sadie Mae Scroggins (voice)
Michael Rye
as Mayor (voice)
Hamilton Camp
as Ghostly Laugh (uncredited voice)
June Foray
as Witch (uncredited voice)