The Sleeping City (1950)

The Sleeping City (1950) is an undercover cop murder metropolitan hospital criminal nurse film noir starring Richard Conte and Coleen Gray, and directed by George Sherman.

Less well known than many inferior film noirs, The Sleeping City does offer a disturbing vision of one of the world's most famous hospitals — Bellevue in New York — in which black market drugs are smuggled out of the hospital in a sting and scam gambling operation.

Richard Conte is the cop who goes undercover, after some suitable screening, and his investigations bring him into contact with a rugged elderly elevator operator, a tormented roommate, and a mysteriously criminal nurse. an authority figure — here the actor Richard Conte — offers some message of public authority and often warning.

Woman in Hiding (1950)

Woman in Hiding (1950) is a woman against the world lousy husband flashback murder and female seeker hero film noir, starring Ida Lupino as a wife on the run, escaping from a murderous marriage and finding love on the run in the form of lackadaisical magazine and cigar seller Howard Duff.

Corporate villainy also appears in this car smashin chase and hide thriller in the form of Stephen McNally playing an industry boss who is going to be appropriate screen material for the 1950s, straight outta war and into world domination, starting with mob behaviour in the boardroom.

I would seem from the Wikipedia entry on Woman in Hiding (1950) that not everybody agrees that this is a film noir. The works that are cited are the super-seminal and all-ruling guide to the subject of film noir,  Raymond Borde and Etienne Chaumeton (2002). A Panorama of American Film Noir (1941-1953), and Ian Brookes Film Noir: A Critical Introduction. 

Shakedown (1950)

Shakedown (1950) is a slick and high speed journalism and media film noir crime and blackmail film about one young photographer's ambition to be the richest, best and most romantically involved snapper in the entirety of the great noir city.

Directed by Joseph Pevney and starring Howard Duff, Brian Donlevy, Peggy Dow, Lawrence Tierney, Bruce Bennett and Anne Vernon, Shakedown manages to blur the lines between crime and reportage.

With its hero to heel ending Shakedown (1950) is a lot more than a thrilling item of media noir, with its twin villains and twin romance stories, and with a central character about whom we shouldn't but do sympathise with.

Undertow (1949)

Undertow (1949) is a frame-up crime and romance film starring Scott Brady, Dorothy Hart and Peggy Dow.

The idea of the innocent being caught in a conspiracy of guilt is huge in the movies, but oddly not so common in real life. 

The paranoia of the golden age era was expressed in its purest form in many films, not in the least those by Alfred Hitchcock, of a person — always a man — accused of a crime they did not commit.

These fantastical tales make up a large part of noir cinema, whether it be the innocent man dragged by coincidence into a plot of which he knows nothing — to the ex-con unable to go straight, either due to circumstance, a frame-up, or the general ill-will of society which seems to dictate that once a man's a con — he's always a con.