as positive. A review in The Chicago Tribune calling it "weird and skeery no end" but full of "snappy dialog". The review added that Ellen Drew "depicts stark terror so realistically that I feel she is scheduled to slip into the boot of Fay Wray". Variety called the film "a chiller-diller that will send fans of goose-pimply melodrama from the theaters amply satisfied" and "red meat of the bugaboo ticket buyers". From retrospective reviews, Craig Butler of AllMovie declared the film as "definitely one of the strangest pictures ever made", that was still "fairly effective and entertaining little "B" flick—and not one that gets by just on camp value", noting that the stories plot points were ridiculous, but "has some very interesting points, including a mixture of noir and horror which, while not totally successful, offers some rewards" and that "the cast is also much better than one usually finds in horror films of this type". References Sources External links 1940s science fiction horror films 1940s American films 1941 films 1941 horror films Mad scientist films American monster movies American black-and-white films Films directed by Stuart Heisler Films about gorillas Films about brain transplants American science fiction horror films Paramount Pictures films