Murder on the Reef follows the hotly debated issues surrounding the world's largest living structure, the Great Barrier Reef. Many scientists now believe as much as fifty percent of the corals have died and for 4 years, scientist Dr Allen Dobrovolsky tested the reef's water quality and his research and data collected have led him to believe that the reef could now be facing an environmental disaster. This film investigates the causes of the reef's decline (including water contamination, crown-of-thorns starfish and dredging) from the perspective of locals, scientists and the indigenous people of the region.