The world was captivated when three people died and one was left seriously ill from suspected mushroom poisoning after a lunch in a regional Victorian home.

Now that the meal host Erin Patterson has been charged with murder and attempted murder, the intrigue has only intensified.

Today, criminologist Xanthe Mallett explains the investigation into the 49-year-old and whether she can receive a fair trial. 

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Dr Xanthe Mallet, criminologist and associate professor at the University of Newcastle