Water that turns blood-red, foul and poisonous ... Swarms of locusts that leave endless expanses of barren fields and trees in their wake... Insects whose bite brings illness and death ... A thick film of darkness that obscures the sun for days ... The Biblical plagues of ancient Egypt? Or those, often man-made, of the 21st century? They are both - and this series reveals the eerie connection between the Old Testament catastrophes and those that wreak havoc upon us today. "The Return of the Plagues" examines the reality behind the pestilences described in the Book of Exodus 7-11: the devastating cataclysms that struck the Egyptians when they refused to let the Israelites leave under Moses' conduct. All the plagues have recognizable natural causes - and they are returning to haunt us today. Each episode of this series opens with an exposition of the biblical plague in question, illustrated through dramatic reenactments in Old-Testament landscapes. Then the modern-day story is introduced, and we follow researchers and scientists who show us how they are coping with the death and destruction caused by the plagues of today. They will help us find the truth about the ten great plagues of the Bible - and explain why they still challenge us today.