Sorry, Wrong Number

 . . . and DEATH!!!
So, laughably, began this intriguing story. Although the film itself is deeply noir, and the soundtrack and camera styles all shout 40s, the style of its telling shifts distinctly into what some might name post-modernism. The tension begins, as the film, in medias res, followed by a series of long flashbacks from different perspectives brought on by various telephone conversations. Through these (very dime-novel) conversations and the revealing flashbacks, the audience slowly begins to understand the increasing tension until the final, seriously noir ending.

The characters in the story, acted by Barbara Stanwyck and Burt Lancaster, are distinctly unlovable. They're protagonists without being either heroes, or anti-heroes. They have flash, glamour, and personality, but not anything larger or enlightened. Even the character actors in smaller parts struggle to make their characters anything more than just people doing their thing, which seems to ground the film and give it depth. It's almost reverse psychological.

rottentomatoes.com gave this movie a whopping 86%, putting this film well into the top few I've seen there.
The film is dated and awkward in moments, but still well-directed and acted; a sordid story well-told.