Very very predictable, including the post credit scene !!!

There is, somehow, an interesting story here, as well as some good acting. There are also some good scenes

Let me be very fair here, this is not the best movie in my opinion. But, this movie is fun, it has purpose and is very enjoyable to watch.

The movie turns out to be a little better than the average. Starting from a romantic formula often seen in the cinema, it ends in the most predictable (and somewhat bland) way.

Mr. Moto (Peter Lorre) has himself imprisoned on Devil's Island so he can help his cellmate (Leon Ames) escape and thereby get the goods on a gang of international killers.Trying to determine where the racism begins, ends and is even refuted in the Mr. Moto pictures is a fun game. Certainly, Moto himself can be thought of as a racist invention because of his portrayal by white man. But then, he is portrayed as clever and likable, so it is not as though the creators meant to insult the Japanese.Further, the film actually shows men acting racist and presents them in a poor light. And a subtle jab is given to racism when Moto is able to easily get through a gate by merely being a house servant. Who is foolish here? On top of all this, we have a fairly decent detective story, a jail break, and a mighty impressive bar fight.

Mr. Moto is undercover again. This time he helps Leon Ames escape from Devil's Island and then works for him as a servant so he can spy on the League of Assassins that Ames is part of. From what I've read here, this part of the movie has ruffled a few feathers as Lorre plays the Japanese servant in a very stereotypical manner. But it should be pointed out he's trying to appear slow-witted and harmless to throw off suspicion, so it's not like a Stepin Fetchit situation. There's actually a plot reasoning for it; he's not doing it to get racist laughs. Moto also puts on a disguise as a German artist at the art show late in the movie. This is amusing when you think about it: a German playing Japanese playing a German. Overall, it's not the best Moto picture. Lorre's performance helps things greatly but the story is pretty weak. Henry Wilcoxon plays an infuriating character who keeps refusing to believe there's any danger. There's a mystery about who is the leader of the League of Assassins that will come as no surprise to anyone. I'll give you a hint: it's an American actor using a dreadful British accent. It's a nice time-killer but nothing more.

Interpol's best agent Moto Kentaro is undercover at the beginning of Mysterious Mr. Moto as a notorious prisoner on Devil's Island. Peter Lorre does an arranged breakout from the island with Leon Ames the head of an international syndicate of assassins. In Brooklyn on a more local level it was called Murder Inc.Lorre attachs himself to Ames to work as his Japanese houseboy the better to get a line on the group. A bunch of them are in London to carry out a contract on Czech steel magnate Henry Wilcoxon unless he coughs up a new manufacturing formula he's developed. Wilcoxon does not take kindly to threats so Lorre has his work cut out for him.International politics gets jumbled considerably as Moto has a Chinese girl confederate here played by Karen Sorrell. And of course he's treated badly when he's in the notorious Limehouse district by the locals and rather condescendingly by Scotland Yard.I will say this though. It's rather obvious after a while who the real ringleader is, but if you look at the cast credits you won't figure it out because of the roles this player done.Peter Lorre is on top of his game, the film though has not stood the test of time.

It's interesting that this movie had a Scotland Yard connection, one might have expected Sherlock Holmes to make an appearance. Mr. Moto (Peter Lorre) assumes the identity of a Japanese houseboy to Parisian criminal Paul Brissac following their escape from a Devil's Island prison camp. Once situated in London, Moto begins his investigation into an international 'League of Assassins', who have targeted industrialist Anton Darvak (Henry Wilcoxon) for his newly developed steel formula.Moto manages to dodge Scotland Yard detectives as well as nasty League henchmen in order to uncover the head of the assassins. In one of those films where the least likely character turns out to be the criminal mastermind, you have to wonder why Frensham (Erik Rhodes) allowed himself to be positioned under the murder weapon, hostage to Moto in one of his many disguises. Say, didn't he remind you of Arte Johnson's dirty old man character from 'Rowan and Martin's Laugh-In"?Now just over half way through watching the Mr. Moto films, I'm impressed as to how consistently better they seem to be compared against those of the other Oriental detective of the era, Charlie Chan. The Chan stories relied on repeated use of the old lights out trick and other ruses on the way to solving the mystery, whereas the Moto stories are a lot more physical, even violent, with Moto engaging in a fair share of the action. In this one, Moto delivers some crisp judo throws and takes some wild flying leaps tackling bad guy Brissac in the finale. Elsewhere on this board I learned that Lorre's stuntman for the martial arts sequences was a gentleman named Harvey Parry.Even though they're nearly seventy years old, it's still a kick to watch any of these old time detective mystery films. Peter Lorre is a blast as Mr. Moto, and any movie in the series from Twentieth Century Fox is recommended for fans of the genre.