In 2007 the Academy Award winning director of Shall We Dance released his new film, a critique of the Japanese criminal justice system from a wrongful conviction perspective. In this article, I use the filmas avehicle to serve three disparate goals. First, I provide the firstlegal critique of the film, a genre of legal scholarship developing over the past 15 years. Second, I use the film to reflect on criminal justice reforms in Japan, in particular the introduction of the Lay Judge System (quasi-jury saiban-in seido) from 2009. Third, I critically ask whether use of film as a legal text assists or distracts from my primary pedagogical objectives in teaching comparative Japanese law. I conclude with a cautious recommendation of I Just Didn't Do It as legal cinema, as a catalyst for reform of the Japanese criminal justice system and as an educational text.