Witness director Al Adamsonâ€™s disturbing and socially significant cinematic portrait of a biker gangâ€™s anti-social rampage! Motorcycle maniacs on wheels terorrize the southwest! After this sadistic gang wreaks havoc on the patrons of roadside diner, a waitress and ex-marine are the only surviving witnesses. The pulse-pounding suspense inscreases rapidly as the duo find themselves pursued through the desert by The Satans in a bloodthirsty chase. This seventies cult hit features chilling performances by Russ Tamblyn and Greydon Clark as "Acid."