A dehydrator and death cap mushrooms are uncommon murder weapons. To use them in preparation for her guests' beef Wellington lunch, Erin Patterson needed to make a plan months before the day.
In Chapter Three of The Case of the Mushroom Lunch, Rachael Brown and Stephen Stockwell wind back through each of the steps Erin Patterson is believed to have made in preparation for murdering her relatives.
Leongatha, Crime, Poisoning