The last film for Myrna Loy at MGM, where she had made the majority of her films since the 1930s. In her autobiography she stated this picture was a "lackluster finish to a great series", and that she "hated" it.
The final of six "Thin Man" movies released by MGM from 1934-47 starring William Powell and Myrna Loy, filmed from early January to mid-March 1947.
This film was a disappointment at the box office, resulting in a loss to MGM of $128,000 according to studio records.
At one point Nick Charles finds a razor blade and exclaims, "It's just a razor blade. Oh no, no; it couldn't have been Somerset Maugham." That is a reference to W. Somerset Maugham's best-selling novel "The Razor's Edge".