Three black and white crime films from the 30's; all are pretty creaky with variable sound and picture quality.
THE SPECKLED BAND  is an enjoyable Sherlock Holmes adventure with Raymond Massey as the detective, and based on Conan Doyle's story. Pantomime villain Lyn Harding is killing people with a poisonous snake, and overacting tremendously. Massey is a good Holmes, and Holmes' wit and penchant for disguises are on display here. This film is a solid and fun template for the Basil Rathbone films which were soon to follow.
Arthur Wontner is another good Sherlock Holmes, but plays him more serious and a bit bossy in SILVER BLAZE , again based on Doyle's story, but mixed with Moriarty [a hammy Lyn Harding again] and the Baskerville family, for reasons not entirely clear to me. SILVER BLAZE is a prize racehorse who is nicked on the eve of a big race. Holmes must find him, and solve the murders that lie on the trail. This is also enjoyable, and the character of Holmes, and even some of the dialogue ["the curious incident of the dog in the night-time"] are very close to Doyle's original.
BLAKE OF SCOTLAND YARD is not so good, and I was a bit bored with it. Master criminal The Scorpion has stolen new invention, the Death Ray, and Scotland Yard must attempt to retrieve it. How The Scorpion can get much done when he walks in a hunch and constantly has a [rather cool] scorpion claw-hand held up in front of his face, I don't know. This film is gloomy and dark, and suffers from not having an instantly identifiable and iconic character like Holmes. The eponymous BLAKE OF SCOTLAND YARD is largely lost in the dark.
The first two films are minor gems, especially for Sherlock fans, and if you get this used for 28p [with p+p it is still under two pounds], you've got yourself a bargain.