Terror is a Man

Terror is a Man, also known as Blood Creature, is a 1959 horror film and, according to the wikipedia entry and the IMDB, was based on The Island of Dr. Moreau by H.G. Wells. It is directed by Gerardo de Leon and stars Francis Lederer and Richard Derr (Star Trek: TOS connection). It was a Philippine/American production filmed in the Philippines. This is one that would stand up to watching again.

Moria calls it " routine". 1000 Misspent Hours says, "of the greatest importance, Francis Lederer nails pretty much every aspect of this subtle and multifaceted role" and "On the technical side, Terror Is a Man is one of the most beautifully shot movies I’ve seen in quite some time." Stomp Tokyo says,

if you care at all about movies like this, it is an intriguing and wonderful thing - the mad scientist as normal.... for the completist, those like me who habitually seek out each and every horror movie they have ever heard about in their misspent life, the changes the movie makes on its tired old tropes can be nicely refreshing.

TCM has some information.