This is the first fiction film from Hirokazu Koreeda that was shot in anamorphic digital and framed in 2.35:1.
To write the film the director consulted with the legal supervisor for one of his previous films, Like Father, Like Son.
The film was part of the line-up at Japanese Canadian Film Festival in Toronto in 2018.
The Canadian DVDs for The Third Murder also included the short film A Gentle Night.
The film premiered at TIFF (Toronto International Film Festival) in September 2017.