A few years ago we happened on a great set of books called the "Rabbi Small Mysteries" written by
Harry Kemelman - Wikipedia, the free encyclopedia
Here's the first one.
Friday the Rabbi Slept Late - Wikipedia, the free encyclopedia
They led me to a better appreciation of Judaism.
They also got me interested in the Peter Decker & Rina Lazarus mysteries by Faye Kellerman, which led to Faye's husband's (Jonathan Kellerman) mystery books starring Alex Delaware.
These aren't hardcore mysteries like The Maltese Falcon or The Big Sleep, but they are pretty entertaining nonetheless.
We also enjoy the set of mysteries by Dick Francis that usually involves jockeys, or at the least, the horse-racing community in England.