All Her Fault is an upcoming mystery drama miniseries starring Sarah Snook for Peacock, adapted from Andrea Mara's book. Marissa Irvine arrives at 14 Arthur Avenue to pick up her son Milo from a play date, but when she gets there she can't find Milo, sparking a parent's nightmare. The series is an adaptation of the best-selling novel of the same name by Andrea Mara.