Time Out says
A stark, solid, impressively stylish film, overshadowed (a little unfairly) by the later explosion of Whale's wit in the delirious Bride of Frankenstein. Karloff gives one of the great performances of all time as the monster whose mutation from candour to chill savagery is mirrored only through his limpid eyes. The film's great imaginative coup is to show the monster 'growing up' in all too human terms. First he is the innocent baby, reaching up to grasp the sunlight that filters through the skylight. Then the joyous child, playing at throwing flowers into the lake with a little girl whom he delightedly imagines to be another flower. And finally, as he finds himself progressively misjudged by the society that created him, the savage killer as whom he has been typecast. The film is unique in Whale's work in that the horror is played absolutely straight, and it has a weird fairytale beauty not matched until Cocteau made La Belle et la Bête.