As so many excellent documentaries have before it, Baby God tells a tale so astonishing it can only be true. It also steps through a story that's harrowing, horrifying and downright nightmarish. For more than three decades, couples eager to start a family went to Dr Quincy Fortier, seeking his help to have children when they couldn't conceive. Alas, the Las Vegas-based fertility specialist assisted them in a thoroughly unwanted way: by secretly inseminating women hoping to become mothers with his own sperm. Directed and produced by documentarian Hannah Olson (whose next project is about the Diamond Princess cruise ship and its COVID-19 outbreak), Baby God really has to be seen to be believed. It dives into shocking circumstances, and isn't always easy to watch as a result, but it's gripping from start to finish. Olson explores her subject's history and the details of his crimes, and also surveys the aftermath through his biological children.