Alcaras turns his attention to the recent Chicago Marathon, attended by Carrie, the Irvines and a potential new suspect; a canvassing event aims to keep the case alive; Peter takes matters into his own hands.
In Chicago, Marissa Irvine arrives at 14 Arthur Avenue, expecting to pick up her young son Milo from his first playdate with a boy at his new school. But the woman who answers the door isn't a mother she recognizes. She isn't the nanny. She doesn't have Milo. And so begins every parent's worst nightmare.
All Her Fault - Season 1, Episode 3 Synopsis and Schedule