A series of grisly murders plague a small mountain community and the sheriff suspects a local scientist whom he dislikes. Together with a former professor and the professor's pretty daughter, the scientist sets about solving the crimes and discovers the killer is an oversized 16th century conquistador, resurrected by a lightning bolt from his mountain grave.
Ed Kemmer
as Wayne Brooks
Sally Fraser
as Janet Cleveland
Morris Ankrum
as Dr. Frederick Cleveland
Bob Steele
as Sheriff Parker
Buddy Baer
as Vargas the Giant
Gary Crutcher
as Charlie Brown
Billy Dix
as Indian Joe
Oliver Blake
as Cafe Proprietor
Jolene Brand
as Ann Brown
Ned Davenport
as First Townsman
Ewing Miles Brown
as Townsman
Frank Hart Taussig
as Townsman (uncredited)
