Serious questions raised about case of convicted triple murderer Robert Farquharson

This is the challenge in the case of Robert Farquharson, one of Australia's most despised criminals. 

On Father's Day in 2005, supposedly in an act of revenge against his ex-wife, he drowned their three young sons. 

The little boys, aged 10, seven and two, were passengers in their father's car when he drove it into a dam. 

At two trials, Farquharson was convicted of murder for his crimes and sentenced to life in prison.

But now, as Nick McKenzie reports, new scientific evidence raises serious questions about what really happened. 

This joint 60 Minutes, The Age and The Sydney Morning Herald investigation however does not advocate for Farquharson's freedom; rather it presents fresh expert analysis of facts that weren't adequately canvassed at Farquharson's trials, and asks if the new information is sufficiently important to consider further judicial review of the case.