The series features an ensemble cast led by Katja Herbers, Mike Colter, and Aasif Mandvi. The series premiered on September 26, 2019, on CBS. In October 2019, the series was renewed for a second season. In May 2021, it was confirmed that the series would move from CBS to Paramount+. The series has received critical acclaim for its acting, characters, writing, direction and cinematography.
A skeptical forensic psychologist (Herbers) allies with a Catholic seminarian (Colter) and a similarly sceptical technology contractor (Mandvi) to investigate purported supernatural incidents.