I don't know what to say about the other reviews here(better to say nothing as their insights offer that suitable response). This is a great film with a great pairing of that wonderful coupling of gargantuan Sydney Greenstreet and devilish, diminuative Peter Lorre. Grenstreet never was better as a Scotland Yard superintendant who mistakenly sends an innocent man to his death. He is forced out of his job by another aspiring detective played with relish by George Coulouris. Greenstreet remarks, "He underestimated the size of my britches." And so he did! Greenstreet was that special kind of actor that draws you to his every word, action, and deed. His refinement of speech and larger-than-life presence greatly enhance the film. Lorre is Lorre, a funny character actor getting a break from villains for a chance. Lorre and Greenstreet aid each other very nicely and their scenes together are perhaps the most fun ones in the film. Behind all the actions of the two men is a fine Victorian mystery that has a good, hard-to-figure out ending. Director Don Siegel shows his deftness in capturing a dark Victorian setting. His scene exhuming a casket is particularly well-done. A fine film and an unfortunately all to rare chance to see Lorre and Greenstreet together.