Dr. Jack is a bit more sentimental than most Harold Lloyd films and suffers as a result. It holds interest, nonetheless, especially for the finale, a rambunctious segment that foreshadows the 'Old Dark House' genre that was about to achieve popularity with films like The Cat and the Canary and The Bat. Lloyd also assumes the character of a lank-haired hunchback with vampire-like fangs, a character not a million miles in appearance from Lon Chaney's in London After Midnight. Did Lloyd have an influence on the development of American horror cinema? This is an interesting area for future research.
