Filming for the series began on June 26, 2017 for an eight-episode first season. In April 2016, Dick Wolf and NBC announced they were working on the series, a first season being based on the Mendendez brothers murder case. A second season is yet to be confirmed, but Dick Wolf mentioned he has plenty of ideas for the show and a possible storyline if there is a second season. "This is unique for me, after 27 years of "Law &amp; Order"," Wolf told TV critics at TCA in an interview. "This is taken from the headlines; we've made some great shows ripped from the headlines, but this is on a different level." An idea for a second season storyline includes the Oklahoma City bombing of 1995. "Just before the [Television Critics Association summer press tour], I had mentioned to him the Tim McVeigh case, and his eyes lit up," René Balcer says of Wolf's reaction. "Because Dick and I were together, we were in the same office when the bomb went off in Oklahoma."