Both Jessica Biel and Melanie Lynskey's husbands have roles in the series. Justin Timberlake and Jason Ritter play police officers.
Candy Montgomery mentions going to the "Plano Target" several times throughout the series. Though this may seem anachronistic, the first Target store in Plano, TX (one town over from the setting of Wylie, TX) opened in 1976 at 120 W. Parker Road. Since the series is set in 1980, it is very likely the real Candy Montgomery shopped at the Plano Target. The store is still open as of 2022.
Candy Montgomery's case also serves as the inspiration for the HBO event series Love & Death (2023), which starred Elizabeth Olsen as Candy and Lily Rabe as Betty Gore.
When the series was first announced in Summer 2020, actress Elisabeth Moss was set to star as Candy Montgomery
Elizabeth Olsen did confirm in an interview with Extra that Jessica Biel did reach out to her about them both filming their shows about the same true crime. Elizabeth did think it was sweet of Jessica to reach out as they never met in real life.