Although the title of this film is hardly borne out by its content, Charles Boyer and Jean Arthur are very effective in this story of an unhappy society wife (Arthur) who finds love in the arms of a suave Parisian (Boyer) where she has been driven by her insanely jealous, wealthy ship-building husband (Colin Clive).
For the most part the film carries its mix of romantic comedy and crime thriller well although eventually the plot shifts gear with a Titanic-like disaster that, clever resolution aside, skews the film's mood away from its escapist mode typical of a time when Hollywood movies were largely about the lives of the idle rich, into something discordantly dark (not to mention having very dated special effects).
FYI: The Hindenburg which is referred to in passing as a means of trans-Atlantic passage for the married couple crashed in May of 1937, the year of the film's release, with the loss of 36 lives.