Three teenagers and their dog solve mysteries with the help of two ghosts from the 18th century.
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Joseph Barbera
Creator
William Hanna
Jerry Dexter
Elmo (voice)
Daws Butler
Mudsy (voice)
Micky Dolenz
Skip Gilroy (voice)
Don Messick
Boo (voice)
Kristina Holland
April Stewart (voice)
Tommy Cook
Augie Anderson (voice)
1969
2004
2016
2021
1996
2011
1986
1991
2014
2008
1985
