As one of the lead characters keeps reminding you, the Devil is in the details. And Badla, at its very core, is all about details. Small, niggling, conniving details which, for better or worse, keep the viewer interested for the vast majority of the film.
Director Sujay Ghosh is not unfamiliar with the thriller genre, having delivered a genuinely intriguing movie in Kahaani before. Badla, inspired by the Spanish film Contratiempo (The Invisible Guest), is another whodunit that is all about revenge. Interesting quirks like using the Mahabharatha to draw parallels are what set it ....