ट्रिविया

In a 2021 interview with Variety, Joe Berlinger revealed why there was no new interview done with Richard Cottingham for the series: "We did have some reach out to Cottingham, but there was an indication that there would have to be a payment, and we don't pay for interviews. As soon as payment comes up, I turn off. Obviously, we're not gonna pay a serial killer. The archival footage of him is quite powerful, but we were very conscious of focusing more on the victims."