NYT notes that this was William Powell's first starring role for Warner Brothers. He made a total of nine films at the studio.
There is an impressive sequence that is technically ingenious: the camera begins on Doris Kenyon's character as she gazes out of her home at night - the camera pulls away and though the jungle foliage - at a group of dark bushes there is a clever splice and the camera continues to move through and over the jungle landscape (via a VERY good miniature) and then via another clever splice, the camera brings us to and inside William Powell's home, where Powell is also gazing out into the night.
The play on which the novel and this movie was based opened in Cardiff, UK on 7 October 1929.
The film's pre-release title was The Other Man.
Dr. Marsh's car is a 1930 Ford Model A Phaeton.