The Inside Story of Broadchurch: How They Managed to Keep the Killer's Identity a Secret

TLDRBroadchurch is a popular detective show that kept the identity of the killer a secret from everyone, including the actors. Olivia Colman, one of the cast members, accidentally found out who the killer was and had to keep it a secret. The show gained immense popularity, and Olivia had to refrain from telling anyone, even her close friends. The actor who played the killer only found out in the last episode.