Lazarus

In the year 2048, Dr. Deniz Skinner, a scientific genius dubbed second only to Einstein, developed the revolutionary painkiller Hapna. Being cheap with no reported side effects, the drug gained widespread acceptance, even though Skinner himself silently vanished one year after launching the drug. Everyone revelled in the heaven of relief and ecstasy provided by Hapna, but they would suddenly come crashing down to Earth. It is now 2052, and Skinner reappears, giving the shocking announcement that Hapna was designed to mutate into a lethal toxin, killing anyone who had consumed it. While he claims to have a cure, he will only hand it over if he is physically found within 30 days.