 While they are there, a radio broadcast announces that a maniacal "monster killer" is in the area.When they arrive at the camp, the counselor, Jeff Dixon (Dave O'Brien), complains to his girlfriend, camp nurse Linda Mason (Dorothy Short), that he will get no work done on his thesis because of the rowdy juvenile delinquents.One night, Nardo (Bela Lugosi), a mysterious caped figure, and his dwarf assistant, Luigi (Angelo Rossitto), ask a local gas station attendant for directions to the hilltop Billings house, which has been deserted for years since its owner was murdered.