When it's a Myrna Loy movie, you really WANT to enjoy it. She is always so wonderful. Add the engaging Melvyn Douglas to the mix, and you SHOULD have an delightful film. But good as they are, even these actors need a script, and Third Finger, Left Hand really doesn't have much of one. The initial idea is good - a woman who pretends marriage to deflect unwelcome male advances on the job (surely a timely plot!) - but at a certain point, the screenplay runs out of steam and the picture just gets stupid. For example, Margo has been carrying on this deception for a year, but she doesn't have a concrete description of her alleged husband, and each time she is asked, makes up a new (rather asinine) one. Her father (Raymond Walburn) and sister (Bonita Granville as Vicky) never asked to see a picture or to know what he is like? Margo should be smarter than that.
As a result, these two entertaining actors become irksome after a while, as they try to best and humiliate the other. If Margo is interested in Jeff, it's hard to imagine her as a simple housewife in Wapakinetta, Ohio. (We surmised that she will end up handling the business end of his art sales. He's really not all that good at it). Late in the film, the couple run into his neighbors from Wapakinetta, and Margo starts talking like a Brooklyn B-girl. Several members of the group were very distressed at her actions, though I myself found it fit revenge for his earlier behavior. Yet, there is so much plot between his actions and hers that it did, on many levels, seem out of place and inappropriate. It's as though the early chemistry between the two actors vanishes.
Not that there is any particular chemistry with any of her other suitors. Hughie, seen briefly, is a drunk, and Philip is boring. It's hard to imagine the intelligent Margo with any of them. In the long run, she would have been better off single.
There are several underused actors in the production, including Felix Bressart (August Winkel) and Bonita Granville. It's a shame to waste such talented people; when you see them in the cast, you expect them to be integral to the plot. Regretfully, they were not.
We thoroughly enjoyed the scenes with Ernest Whitman, as Pullman conductor Sam. Viewed from a 21st Century perspective, Sam is a wonder. A man eager to stimulate his mind, Sam has a law degree, which he pursued to alleviate the sameness of his job. Sam, as a matter of fact, is a far better lawyer than Philip, and proves an able adversary to Philip when Jeff solicits his assistance. Sam is also African-American. Mr. Whitman spent most of his career, not surprisingly, playing bathroom attendants and African natives (The Road to Zanzibar). But he also had a stage, radio, and a brief television career, appearing as Bill Jackson in the radio and television versions of Beulah. He died in 1954, at the age of 61.
According to this TCM article, Ms. Loy and Mr. Douglas became lifelong friends. Their liberal politics and social activism united them. Ms. Loy supported Helen Gahagan Douglas when she ran for the U.S. Senate against Richard Nixon (Nixon accused Congresswoman Douglas of being a Communist. She was not, but it worked. He won the election. For more concerning the election, visit this New York Times article.)
Though reviews were not generally enthusiastic, this New York Times review was actually complimentary towards Ms. Loy and Mr. Douglas. The story was reused by the Lux Radio Theatre in September 1941 when they presented a radio version starring Martha Scott and Douglas Fairbanks, Jr. (AFI catalog). We'll leave you with the trailer from the film.