Ridley Tarantino’s review published on Letterboxd:
Sinner integrates an original story structure, haunting music, nightclub atmosphere, feminist romance and melodramatic tragedy. And it remains classy by rejecting the hardcore sex or sadism you might expect. This is more of a personal statement or responsible professional job. And it has that rare kind of Franco ending that is so open-ended that it drives you mad and forces you to meditate on the story's reality and its metaphors. I like when Franco's films are personal and still can easily convince the mainstream of his genius. I hope this film was a grindhouse smash because its one of the purest examples of drive-in aesthetics you can find. It might have been too sexy and unadulterated for most suburban drive-in's though.