For me Laughton falls a bit short, his Italian accent pretty labored. And he just doesn't capture the Italian ebullience. But still, he's always interesting. Lombarde gets to grit her teeth and agonize. She's fine, but I'd prefer her in something meatier, or funnier. But Gargan here is the truest character....the one willing to alter his previous character. I had seen him in mostly small roles. So to find him so full of fire in a major role was a total surprise.
For a more interesting pairing of Laughton & Lombard see "White Woman." A very hard hitting version of middle aged guy and young gal.