This is one of the better mystery films where Boris Karloff stars as Mr. Wong. This one deals with a man, Brendan Edwards, who is an antique collector and loves the Chinese arts and he has just acquired the rare sapphire known as Eye of the Daughter of the Moon. Mr. Edwards also suspects he will be murdered soon but has decided to put the name of the person who he suspects in a sealed letter in his safe - he did show that letter to Mr. Wong and explained a few thing to him. One night Mr. Edwards and his wife throw a party and had a few party games to entertain their guests, one of the games played that evening was "charades" - it turned out to be a deadly game for Mr. Edwards. Mr. Wong, who was one of the many guests that evening, is on the case.What is good about this particular Mr. Wong mystery is that there are a handful of suspects with good motives to kill Mr. Edwards, so there are couple of twist and turns that will keep this Mr. Wong film interesting.9/10

Mr. Wong (Boris Karloff) attends a party where the host is murdered right in front of him. The host was kind of a d-bag and a thief who had stolen Chinese antiques in his possession. But still, Mr. Wong investigates to find out who killed him. As with any Wong movie, Karloff is the main reason to see it. Valerie Tree plays to the balcony. Ham city, kids. Craig Reynolds isn't much better, at least when he's with her. Every scene the two share is played like Romeo & Juliet. Grant Withers once again plays the police detective. He's less grumpy here than in his first Wong film. Lotus Long and Chester Gan are good in supporting roles. Decent time-killer. The Wong series was never on par with Charlie Chan but it was generally entertaining.

Enjoyable if less that competent mystery with Boris Karloff once again playing Hugh Wiley's Oriental detective Mr. Wong of San Francisco. Karloff breathes most of the life this film has which tells of a wealthy man and his less than devoted wife and his burgeoning collection of rare and valuable Oriental artifacts - most recently the rarest gem of all, the Eye of the Moon. A dinner party is thrown with Wong and another famous criminologist in attendance. Prior to party games, Mr. Wong is shown the rare gem and a letter he has written with the name of who he suspects of a possible future crime - his murder. The games begin and the wealthy man is shot and Mr. Wong, Mr. Janney(the other criminologist), and the policeman Street(played by Grant Withers)begin to sift through the evidence and see who is the killer(naturally the letter was taken by someone so the movie could go on). While it is true that some of the clues in finding the killer are NOT presented to us, I had no problem at all figuring out who the killer was. Just listen to the conversation between Mr. Wong and the victim carefully and it will resonate loud and clear for you. That being said, I did enjoy this film as the mystery is paced well, there are plenty of red herrings that MIGHT have shaken my preconceived notions, the acting is uniformly pretty good all around, and production values are high for a Monogram Studio release.

Boris Karloff follows up his 1938 film "Mr. Wong, Detective", with this clever whodunit about the murder of a rare gem collector, who just the day before he comes into it's possession, receives a sinister written message - "The possessor of the Eye of the Daughter of the Moon rides swiftly to his death." Brandon Edwards (Morgan Wallace) suspects who is out to murder him, and seals his secret in an envelope to be opened in the event of his death, entrusting this knowledge to the Oriental Detective.In the film, we learn that Mr. James Lee Wong is an authority on ancient Oriental art and literature, and a graduate of Heidelberg and Oxford Universities. As such, he recognizes the danger Edwards finds himself in, since the Chinese gem purportedly carries a death curse on anyone who possesses it.In the tradition of the best Charlie Chan films of the same era, "The Mystery of Mr. Wong" cleverly plants various suspects who may have it in for Edwards. Edwards' death itself is uniquely staged, as he takes a gunshot to the chest while participating in a parlor game with a roomful of party guests as witnesses, with no one the wiser until it's time to credit the players.Wong is assisted in the investigation once again by Police Captain Sam Street (Grant Withers); this time around Withers plays it much straighter than the over the top, brash portrayal he gave in "Mr. Wong, Detective". Nevertheless, it's Mr. Wong all the way in solving the caper. In a clever ruse, Wong suggests that he will soon be in possession of Edwards' letter naming the killer, hoping to flush out the culprit. As the parties gather, Wong names the murderer and reveals the mistakes the killer made that led him to his conclusion. The killer is impressed, and even shakes hands with Wong before the police take him away! In a fitting finale, the real letter finally arrives, but the confident Mr. Wong no longer has need of it, and tears it up without even opening the envelope.