Development
John Erick Dowdle and Drew Dowdle initially conceived the project as a feature film. That original work eventually developed into a film script that ended up being around 150 pages. Concerned about its length, the brothers even changed the margins in an attempt to make the script shorter and therefore increasing their chances of interesting a studio. Eventually, Drew decided to convert their film project into a limited series, despite never having attempted that sort of format before. After bringing their project to The Weinstein Company, the producers agreed that the story would best be served in a longer format.
On August 30, 2016, it was announced that The Weinstein Company, through their Weinstein Television arm, was developing a television miniseries based upon the 1993 Branch Davidian siege in Waco, Texas. It was reported that John Erick Dowdle and Drew Dowdle would write the series with the former directing. The series is based on two biographies: A Place Called Waco, by Branch Davidian survivor David Thibodeau, and Stalling for Time: My Life as an FBI Hostage Negotiator, written by the FBI's Special Agent in Charge of Negotiations Gary Noesner. During the pre-production process, the Dowdle brothers spent a week at the Baylor University archives, where they have the largest collection related to the Waco siege, in order to conduct further research for the series.
On October 26, 2016, it was announced that Spike had picked up the rights to the series; Spike TV was later rebranded as Paramount Network in January 2018. On April 21, 2017, it was reported that Salvatore Stabile and Sarah Nicole Jones had joined the writing staff and that four episodes would be directed by John Erick Dowdle with the remaining two directed by Dennie Gordon.