Sherlock Holmes married (sounds already improbable) a daughter of a famous thief. His son moved to US and makes his living by being a private detective; using his father fame, I suppose. The problem is: he uses his grandfather skills to steal some really valuable pieces of jewelry and returning them for a reward (fairly good one). He also wants his exploits to be recorded (why, with the way he does his "investigations"?), so he befriends a writer (who plays dumb sidekick to a great detective, just like Dr. Watson or Capt. Hastings, but these two are very well-developed characters - something the current narrator lacks). This is a first half of the book - 5 short stories.
During the second half, the author probably realizes that he needs to make a son of great detective more sympathetic, so his (R. Holmes') motivations become nobler.
The book is nothing original or groundbreaking; still it is not a complete waste of time - 2 stars.