Here is a great documentary about the negligence that caused the explosion.
http://www.youtube.com/watch?v=ITEXGdht3y8
Russia will be releasing their own version soon that shows their side:
"Russian state TV is working on its own version of Chernobyl, a series based on the worst nuclear accident in history.
The NTV drama will deviate from the acclaimed HBO series - and from historical reality - by claiming that the CIA was involved in the disaster.
Director Aleksey Muradov claims it will show "what really happened back then".
HBO's miniseries, which concluded on Monday, received the highest ever score for a TV show on IMdB, as well as a 9.1 rating on Russian equivalent Kinopoisk.
But in an interview with Komsomolskaya Pravda, Russia's most widely-read tabloid, Mr Muradov said his version of the show "proposes an alternative view on the tragedy in Pripyat".
"There is a theory that Americans infiltrated the Chernobyl nuclear power plant," he told the paper. "Many historians do not rule out the possibility that on the day of the explosion, an agent of the enemy's intelligence services was working at the station."
As you would expect, HBO made a lot of crap up, here is a great read about the realities of the event:
https://www.rt.com/news/461348-chernobyl-disaster-tarakanov-hbo/Show was alright, but not nothing can beat The Wire and The Sopranos.