Australian mushroom murderer Erin Patterson lost a bid to overturn her convictions and had a harsher sentence imposed on Friday, failing to prove she was wrongfully jailed for killing three people with a poisoned lunch. Patterson was found guilty last year of murdering her husband’s parents and elderly aunt, deliberately lacing their beef Wellington meal with highly toxic death cap mushrooms. The 52-year-old maintained her triple murder convictions were a “miscarriage of justice”, urging the...