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

The Australian woman was convicted of murdering three elderly relatives of her estranged husband with a meal laced with poisonous mushrooms, and attempting to murder a fourth, in a case that gripped the country.

Australian woman Erin Patterson has been found guilty of murdering three of her relatives and attempting to murder a fourth by serving them a meal laced with deadly death-cap mushrooms. The meal, a beef Wellington served at her home in Leongatha,