Traffic in Souls (also released as While New York Sleeps) is a 1913 American silent crime drama film focusing on forced prostitution (white slavery) in the United States.

Directed by George Loane Tucker and starring Jane Gail, Ethel Grandin, William H. Turner, and Matt Moore, Traffic in Souls is an early example of the narrative style in American films.

[5][6] The storyline concerns two young Swedish women immigrants who are approached by men soliciting for white slavery under the guise of a legitimate work offer.

Its subjects were working women who had immigrated to the United States, and it was released at a time when the country was undergoing a "moral panic" over the issue of prostitution.

[3][15] Terry Ramsaye, an early film historian, wrote in his book A Million and One Nights, that Traffic In Souls was made in under four weeks with a small budget of $5,000.

What made Henry Alder Leach's cinematography so groundbreaking is how he deliberately choreographed his camera movements to convey meaning and anticipate action—a technique that predicted the future of film-making.