>>5 The House of Silk by Anthony Horowitz is a good one! I also hear Horowitz wrote a book called
Moriarty that is supposed to be good.
A Study in Charlotte was good. It's about the descendants of Holmes and Watson. I have
Sherlock Holmes: The Will of the Dead by George Mann on my reading list. I haven't read it yet so I'm not sure how it is.
If you want to read Agatha Christie, I highly recommend
And Then There Were None.
The Frame-Up by Meghan Scott Molin was an interesting read as well. It's about this comic book artist that realizes that the recent string of murders is being copied from a comic book series. She ends up getting caught in the middle of the investigation when she meets the lead investigator.
I'll add more as I read more!