Watch The Chernobyl Disaster

This concluding episode reveals the huge sacrifice made by thousands to contain this devastating nuclear disaster. Contributors include those who risked persistent deadly radioactive levels to clean up the site.

With the reactor on fire and radiation spewing out into the atmosphere, firefighters battle to bring the blaze under control.

The events that led up to the nuclear disaster in 1986, hearing from those who were caught up in the tragedy, and those who risked their lives cleaning up afterwards.