Someone previously questioned the meaning of the title. In my view, it refers to the double twist imposed on the story's ending by the author--especially once the legal wrangling between opposing lawyers (near the conclusion) is exposed. Then, finally, after winning a victory of sorts, the unexpected happens--thus, the irony of the title. Anyway, this is as good as it gets--you won't find a better version of this story than this 1946 film. I'm always amused to read that someone on these posts "never looks at black-and-white films", a total putdown of all the great classics that came before color was even possible. How dumb can you get? For fans of complex, hard-bitten murder yarns with gritty background and suspense that tightens slowly like a knot, this is for you. Watch as the two leads get more and more entangled in their own web of deception and lies. Turner established herself as a strong actress who could play a role to the hilt when she identified with it. Garfield, of course, was always at his best in tough guy roles. Watch for my article on Lana Turner in an upcoming issue of FILMS OF THE GOLDEN AGE--much of the inspiration for it came from this particular film noir.