Soylent Green is a science fiction film released in 1973 and stars Charlton Heston, Leigh Taylor-Young, Chuck Connors, Brock Peters, and Edward G. Robinson. The film shows a futuristic world where overpopulation has led to the development of a revolutionary and needed new foodstuff called "Soylent Green". When a detective gets too close to finding what this foodstuff really is, he is marked for murder.