Architect David Jimenez vividly recalls a "really scary" moment with his close friend Rex Heuermann in the new Peacock documentary The Gilgo Beach Killer: House of Secrets.

Heuermann has pleaded not guilty and has yet to stand trial. He is currently incarcerated at the Riverhead Correctional Facility in Suffolk County, New York. In March, Suffolk County Sheriff Dr. Errol D. Toulon Jr told People that Heuermann “doesn’t congregate” with his fellow inmates “because of the crimes he’s accused of.”

Here's everything you need to know about accused Gilgo Beach Serial Killer Rex Heuermann, his family, his alleged victims, and what he's charged with.