In April 1986 a catastrophic explosion at the Chernobyl Nuclear Power Plant was shrouded in secrecy. Now declassified documents reveal the story behind the world's worst nuclear disaster.

In April 1986, the cause of a catastrophic explosion at the Chernobyl Nuclear Power Plant is mysteriously shrouded in a veil of secrecy; now, experts examine declassified documents to uncover the true story behind the worst nuclear disaster in history.