The Emmy-nominated New Zealand actor Melanie Lynskey has been cast as triple murderer Erin Patterson in a new limited series titled Mushroom Murders: There’s More to Unearth, which will premiere on Paramount+ in 2027.

The series follows the 97 days between the notorious 2023 lunch – at which Patterson allegedly served toxic death cap mushrooms to her estranged in-laws, hidden in individual serves of beef wellington – and her arrest.

Served at her home in Leongatha, Victoria, the meal killed her husband’s parents, Don and Gail Patterson, and his aunt Heather Wilkinson, leading to Patterson’s eventual conviction.

The case dominated headlines around the world, spawning podcasts, books and TV series, and becoming an obsession of true crime fanatics.…