Actor Rex Reason was originally cast in this movie to portray Tierney or Detective Burke, but his agent was negotiating for him to play a bigger role in it, possibly that of Lee Marvin's villain, but since there was no agreement reached, Reason did not appear in the movie, even though some 1950s era books and magazines sources give him credit for this movie.
The trivia item below may give away important plot points.
One of only a handful of movies made in the so-called golden age of Hollywood, that hasn't had it's original 15 certificate rescinded or lowered by the British Board of Film Classification. This means that the film cannot be viewed legally in the United Kingdom by anyone under the age of 15. Although it may be considered tame by today's standards, the film contains some scenes where extreme violence is graphically described, as well as the disturbing 'coffee pot' scene. Another movie from this period to still retain this particular age rating in Britain for the same reason, is 1949's White Heat.