In the summer of 2023, reporter Dyan Neary received a tip about a problematic doctor in Pennsylvania. Families were claiming that when they sought medical care for their children, this pediatrician falsely accused them of abuse, and their children were taken away from them. The Preventionist traces this doctor’s decades-long career across multiple states, and explores the rise of a new and powerful kind of specialist, the “child abuse pediatrician” — whose decisions can be incredibly difficult to challenge.