Erin Patterson's conviction for the deaths by poisoning of her estranged husband's relatives has prompted fevered speculation across Australia about her motive.

Erin Patterson has been found guilty of murdering three people and trying to kill a fourth by poisoning them with death cap mushrooms. Now a jury has handed down its four guilty verdicts against Erin Patterson here is what happens next.

An alleged murderer testifying as a witness in their own defence is a rare strategy and normally a last resort.