name brand actor co star with clown who often work for jess franco in this dr. mengele story while the end result give the boy from brazil no competition whatsoever . fernando rey and jack taylor be nazi hunter while christopher mitchum be a crippled american mercenary employ by mengele ( howard vernon . ) the pretty young agent who infiltrate mengele stronghold be play by an actress name dora doll i kid you not . she get to see the pathetic result of mengele genetic experiment before be beat and throw in a cage . the only mutant we get to see be a chimp man who probably could have make a good movie . taylor and friends attack the compound in an assault that try and without success and to match the finale of the wild bunch . director andrea bianchi apparently have a surplus of blood squib while the bullet hole be big and bloody and the red stuff spray through the air by the gallon and literally paint the screen crimson . however and gun be aim at soldier chest and they suffer head wound and and taylor walk out of an explode building without a scratch . too bad the real josef mengele do not live long enough to sit through this howlersuch torture would have be partial payback for his crime against humanity .