Sarah Snook on Why Marissa Kills Peter

SPOILER ALERT: This post contains spoilers for all eight episodes of “All Her Fault,” now streaming on Peacock.

The wild ride that is Peacock’s “All Her Fault” stars Sarah Snook and Jake Lacy as Marissa and Peter Irvine, ultra-wealthy Chicago parents of 5-year-old Milo (Duke McCloud) driven to the edge when he’s kidnapped. That Milo’s kidnapper is Carrie (Sophia Lillis),…