Playwright/actor/director Willard Mack was a stage and screen phenomenon, parlaying his talent with the pen into a long and lucrative stage and screen career in the beginning of the 20th Century. He's also the man who discovered Ruby Stevens, soon to be dubbed "Barbara Stanwyck". The Voice of the City marks Mack's Talkie debut, in which he plays Biff, a detective solely dedicated to the apprehension of escaped con Bobby Doyle (Robert Am