Don't let the genre classification as "sci/fi & horror" mislead you. It's really an excellent suspense/mystery/melodrama with the superb Lionel Barrymore (Mr Potter of "It's a Wonderful Life") and a young Maureen O'Sullivan. The sci/fi & fantasy elements - a mad scientist's ability to shrink people and control their actions - are exciting plot devices that allows Barrymore to exact revenge on the men who destroyed his life and family.
Director Tod Browning ("Freaks", the original "Dracula", and many Lon Chaney films) has created a great mix of suspense, action, light humor, & heart-tugging emotions in this tale of revenge and redemption.
The efx are (mostly) ahead of their time, and as good as the later shrunken-people sci-fi movies of the 40s and 50s, such as "Dr Cyclops", "Attack of the Puppet People", and "The Incredible Shrinking Man".
But the best part is the great acting of Barrymore. He plays a desperate escaped convict, who hides by masquerading as a kindly old woman, who in turn pretends to be maker of perfectly detailed dolls. As this character that's both humorous and murderous, obsessed and befuddled, he toys with the police and his betrayers who will be the targets of his army of living dolls. It's a tour de force of acting in this beautiful film.
