In this film noir (directed by Douglas Sirk), a serial killer in London is murdering young women he meets through personals columns of newspapers. He announces each murder to the police by sending them a poem. Research carried out by Inspector Harley Temple (Charles Coburn) reveal that the killer’s verses are strongly influenced by Baudelaire who saw a link between beauty and death. After a taxi dancer disappears, her concerned American friend/co-worker, Sandra Carpenter (Lucille Ball), comes to Scotland Yard (the police), looking for answers. Sandra came from NYC to dance in the chorus of a London show (which closed early). After speaking w/ Sandra (a fiesty, sarcastic, and pretty young woman), Inspector Temple is impressed. He quickly enlists her to answer personal ads, in hopes of luring the killer. Sandra is given a police ID and a small handgun!
There are moments of humor in this movie (which is a remake of a French film). Boris Karloff adds humor to this (rather dark) tale, giving a brief performance as an insane dress designer. Officer H.R. Barrett (George Zucco) is the veteran cop assigned as back-up for Sandra; he and Ball make a fun team w/ good chemistry. While waiting for her mystery date at the opera, Sandra meets sauve and wealthy Robert Fleming (George Sanders). I think Sanders is fun to watch in ALL his roles, MOST notably in All About Eve. In no time, Robert and Sandra develop feelings for each other; she becomes less guarded and he drops his playboy ways. The streets are NOT safe; Sandra is put in danger more than once. Who is the killer? Could it be Robert?
 This is a very enjoyable film. What you get here is a lot of talk and character studies. Lured is a good, old-fashioned mystery yarn. The killer is painfully obvious about halfway through, but the actors go through the motions with obvious relish.
 For a serial killer film, this one must rank as the most reserved and dignified ever made. No blood nor gore, just urbane and sophisticated dialogue throughout, and especially from the killer…
 The emphasis in making this film was clearly on producing an upbeat thriller which has many of the characteristics of a routine whodunit (e.g. numerous red herrings) and judged purely on this basis, it is very successful and entertaining.
-Excerpts from IMDB reviews