Synopsis by Bill Warren
As the Panama Canal is under construction, a group of doctors try to find a cure for yellow fever, or "Yellow Jack," a deadly disease taking its toll on the canal workers. A pet monkey accidentally frees disease-bearing mosquitoes, resulting in the death of Dr. Fontaine (Ferdinand Gottschalk). However, this leads Dr. Murray (Ian Keith) to the belief that the disease can be carried by someone who shows no symptoms.
disease, epidemic, Panama-Canal, canal, fever, legion, worker