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

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

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.