After running their boat aground on an island during one foggy evening, the group investigate a ghost that keeps trying to scare them off the island and out of the spooky castle located there.

Movie rating: 8.0 / 10 (535)

Directed by: Joseph Barbera - Ken Spears - Joe Ruby - William Hanna - Bill Lutz

Writer credits: Ken Spears

Cast: Nicole Jaffe - Casey Kasem - Don Messick - Vic Perrin - Hal Smith

AKA: Mysteries Five, W-Who's S-S-Scared?, Mystery Five, Scooby Doo, Where Are You!, Scooby-Doo: Mystery Mask Mix-Up, ¡Scooby Doo, dónde estás!, Scooby-Doo's Creepiest Capers, Hol vagy Scooby Doo!

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