A seemingly ordinary family lunch becomes a global media story when four guests fall critically ill, with three later dying. As press from around the world descend on the small country town of Korumburra, Victoria the deaths become a tragic cultural touchstone with wild theories and speculation running rampant. When the lunch host, Erin Patterson, is arrested and charged with triple homicide, the alleged cause of death – poisoning by the world's most lethal mushroom, the death cap - is revealed. With exclusive access into one of the highest profile criminal cases in recent memory, the documentary series Death Cap explores how one tragic lunch has the means to shatter a small-town community, while examining the fairness of a trial amidst a global media frenzy.