https://www.youtube.com/watch?v=J9y_QvRwu64&t=3s  Sarah Snook opens up about portraying a woman whose child mysteriously vanishes in twist-filled thriller All Her Fault When working mom Marissa Irvine arrives to pick up her young son Milo from his first playdate in an upscale Chicago neighbourhood, the woman who answers the door is a stranger. She doesn’t have Milo, and…