The lovable Munster family finds their placid world turned into turmoil by the diabolical Dr. Diablo, the mastermind of an art heist using monster robots, including clones of Herman and Grandpa.
Fred Gwynne
as Herman Munster
Yvonne De Carlo
as Lily Munster
Al Lewis
as Grandpa
Jo McDonnell
as Marilyn Munster
K.C. Martel
as Eddie Munster
Sid Caesar
as Dr. Dustin Diablo
Peter Fox
as Det. Glen Boyle
Bob Hastings
as Cousin Phantom of the Opera
Herb Voland
as Police Chief Harry Boyle
Charles Macaulay
as Police Commissioner McCluskey
Colby Chester
as Michael
Joseph Ruskin
as Paulo
