The second in a group of full-color Bell Science Specials produced, written and directed by the legendary Frank Capra, is an hour-long combination of animation and live action, explaining in the most entertaining manner possible the human circulatory system. Shakesepearean scholar Dr. Frank Baxter again appears as "Dr. Research," with Richard Carlson as "The Fiction Writer." After establishing that "haemo" is the Greek word for blood, Dr. Research introduces The Fiction Writer