"Black Widow" is an entertaining 1950s murder mystery set in the world of theatre, and written and directed by Nunnally Johnson, who made a number of good movies at that time ("How to Marry a Millionaire," "Night People," "The Man in the Gray Flannel Suit," "The Three Faces of Eve"). It stars Van Heflin, Gene Tierney, Ginger Rogers, George Raft, and Peggy Ann Garner as sort of the Eve Harrington of the cast.
(Amazon's habit of listing the cast alphabetically is very misleading. Mabel Albertson has a small part, Reginald Gardiner plays Ginger Roger's husband. But Harry Carter and Richard H. Cutting play policeman, listed on imdb.com, but they are also "uncredited" in the film! So it's totally misleading to see those names at the top of the page.) (Note: this complaint has been corrected on this page, but I decided to leave it because I do note the same issue in other listings, where unknown actors in tiny roles are listed because they're first in the alphabet.)
So that little parenthetical complaint aside, it's a small but fun film. The milieu of theatre is entertaining, with Peggy Ann Garner someone on the way up (or hoping to be), and managing to hang out with successful writers and actors, and starting to seduce several of them. Heflin is the serious husband/playwright and a bit of a patsy, Tierney is the "good wife," and Ginger Rogers is fun as the grande dame actress who annoys everyone a bit. Peggy Ann Garner was the little girl so good in "A Tree Grows in Brooklyn." This is one of her adult roles, and she does a good job. It's not a classic, but an entertaining B film with some A list stars and some good dialogue from Mr. Johnson. I'm glad it's going to be out on dvd.