In Woolrich's crime fiction there is a gradual development from pulp to noir. The earlier a story, the more likely it stresses pulp elements: one-dimensional macho protagonists, preposterous methods of murder, hordes of cardboard gangsters, dialogue full of whiny insults, blistering fast action. But even in some of his earliest crime stories one finds aspects of noir, and over time the stream works itself pure.In mature Woolrich the world is an incomprehensible place where beams happen to fall, and are predestined to fall, and are toppled over by malevolent powers; a world ruled by chance, fate and God the malign thug. But the everyday life he portrays is just as terrifying and treacherous. The dominant economic reality is the Depression, which for Woolrich usually means a frightened little guy in a rundown apartment with a hungry wife and children, no money, no job, and desperation eating him like a cancer. The dominant political reality is a police force made up of a few decent cops and a horde of sociopaths licensed to torture and kill, whose outrages are casually accepted by all concerned, not least by the victims. The prevailing emotional states are loneliness and fear. Events take place in darkness, menace breathes out of every corner of the night, the bleak cityscape comes alive on the page and in our hearts.("Introduction")

He began as a minor imitator of Fitzgerald, wrote a novel in the late twenties which won a prize, became dissatisfied with his work, stopped writing for a period of years. When he came back it was to BLACK MASK and the other detective magazines with a curious and terrible fiction which had never been seen before in the genre markets; Hart Crane and certainly Hemingway were writing of people on the edge of their emotions and their possibility but the genre mystery markets were filled with characters whose pain was circumstantial, whose resolution was through action; Woolrich's gallery was of those so damaged that their lives could only be seen as vast anticlimax to central and terrible events which had occurred long before the incidents of the story. Hammett and his great disciple, Chandler, had verged toward this more than a little, there is no minimizing the depth of their contribution to the mystery and to literature but Hammett and Chandler were still working within the devices of their category: detectives confronted problems and solved (or more commonly failed to solve) them, evil was generalized but had at least specific manifestations: Woolrich went far out on the edge. His characters killed, were killed, witnessed murder, attempted to solve it but the events were peripheral to the central circumstances. What I am trying to say, perhaps, is that Hammett and Chandler wrote of death but the novels and short stories of Woolrich *were* death. In all of its delicacy and grace, its fragile beauty as well as its finality.Most of his plots made no objective sense. Woolrich was writing at the cutting edge of his time. Twenty years later his vision would attract a Truffaut whose own influences had been the philosophy of Sartre, the French nouvelle vague, the central conception that nothing really mattered. At all. But the suffering. Ah, that mattered; that mattered quite a bit.