The play is adapted from Andrea Mara's best-selling novel of the same name. Marissa Irvine (played by Sarah Snook) went to 14 Arthur Street - where her son Milo had a play date with another boy in the new school. Marissa went to pick Milo home.But the woman who answered the door was not the boy's mother or nanny, and Milo was not with her.In this way, a parent's worst nightmare begins.The story is presented as a plausible and terrifying situation that ultimately reveals buried secrets within the community.