This is an utterly hilarious parody, spoofing detective stories. Much of the humor is verbal, some of it relies on stereotypes and such related (mainly) to the crime story genre. Some of the humor is a tad dirty, and a bit of it is quite dark. Personally, I loved it, but if you have anything against such humor, you may want to skip this one. It doesn't try too hard to make you laugh. The laughs roll in quite naturally, as it parodies a few of the most well-known fictional detectives; Agatha Christie's Mrs. Marble, among others. The setting is one typical to detective stories, and the atmosphere is simply perfect. The plot is very good, and develops nicely while still remaining interesting. The pacing is mostly flawless, but it seemed to lose momentum some, around the last third. The acting is all good, especially from Alec Guinness, Peter Falk and Peter Sellers. One wouldn't expect particularly good performances in a comedy, but this manages. The film is well thought out and equally well-executed. The only thing I didn't like, was that the ending, or maybe the entire third half of the film seemed a bit anticlimactic. At this point, all the action is done, and we're just waiting to find out who's behind it all. The very end is quite good though, a very funny and entertaining twist to say the least. And everything leading up to it is incredibly funny. The characters, while admittedly based somewhat on stereotypes, are all entertaining and each have their own shtick; among them are Milo Perrier, the perpetually hungry and ridiculously sensitive Frenchman, and the *very* British Dick Charleston, played to perfection by David Niven, and last but most definitely not least, Sam Diamond(Peter Falk, doing his Columbo thing), borrowing from noir and Bogart, complete with nonsensical, lengthy rants. I recommend this to anyone into detective movies and/or spoofs. Do keep the humor I mentioned early in the review in mind when considering whether or not to watch. 8/10