Robert Knapp

A mad scientist named Arana is creating giant spiders and dwarfs in his lab on Zarpa Mesa in Mexico. He wants to create a master race of superwomen by injecting his female subjects with spider venom.

After his wife's murder, Gil Reardon seeks revenge on Ben Keefer. Framed for murder, he escapes prison. The Marshal permits Reardon to face Keefer and his brothers, criminals the Marshal couldn't convict. Reardon confronts them al...