The Midnight Patrol

Her prison term complete, a beautiful chorus girl is quickly taken away from the prison gates in a taxicab, leaving the reporter sent to interview her beaten and bewildered. A few minutes later as he is about to leave the scene the chlorine's body comes hurtling at him from the same taxicab. Murder and a baffling crime with a solution that comes backstage during the rehearsal of a musical comedy. (imdb)