a scientist ( george zucco ) want to create wolf men out of american soldier to fight the nazi and but be brand a mad . he use a simpleton gardener ( glenn strange ) to experiment on by mix his blood with the blood of a wolf . strange and constantly embed his dialogue with the tone of lon chaney jr. in of mouse and men and have no idea what go on and only that he sleepwalk . the victim begin to pile up ( include a little girl and which modern viewer might find rather disturb and and two of zucco rival ) . there be some good dialogue on how man should not mess with nature ( still prevalent today ) and play god . zucco motif may be honorable and but his method be most questionable . and then there be his daughter and anne nagel and who be sympathetically nice to strange and yet have no idea of her father deed . johnny down be a reporter who get on zucco bad side by question him and but win nagel heart and thus create the usual and always dull romantic subplot in classic horror film . at 77 minute and this be about 15 minute longer than usual for a horror film of the early 40 ( particularly one out of prc and who release this one ) and so the romantic story could have be trim for cost and to speed thing up a bit . zucco and fortunately and be never hammy while he leave that to bela lugosi ( who always ham in a deliciously theatrical manner which endear him to audience ) and england todd slaughter . but try not to think of bride of the monster laboratory while look at the one zucco work in and or some of lugosi dialogue in that now classic cult film . mad monster lack a cult follow more because it be not delightfully bad and just have dull pacing in more than a few spot . for prc and monogram lover and i would recommend the corpse vanishes or fog island high than this .