Officials say Netflix's Making a Murderer documentary omits crucial facts

An online petition has collected hundreds of thousands of signatures seeking a pardon for a pair of convicted killers, after a Netflix documentary series cast doubt on the legal process.

The 10-part Making a Murderer documentary, which portrays the case of Steven Avery and his then-teenage nephew, Brendan Dassey, has prompted celebrities and armchair sleuths to flood message boards and Twitter feeds.

Wisconsin authorities say the series was slanted and that it omits crucial facts that led to Avery and Dassey being found guilty in the death of photographer, Teresa Halbach.