I enjoy the cases of John Quincannon and Sabina Carpenter in both short story and novel form. The setting of San Francisco in the Gilded Age is a bonus that I especially like.
This time the two detectives are working on what appear to be entirely separate cases, but it won't surprise any crime-fiction fan that the cases turn out to be connected.
Carpenter's case is the apparent suicide of a young woman whom Sabina is being paid to watch out for. This occurs while a big party is going on at the home of her wealthy parents, and of course it's a big sensation. One little problem is that there's no body at the bottom of the cliff.
Qunincannon's case is a Wells-Fargo robbery that offers a big reward. He's not working in high society, and he follows a trail that takes him to the bars and dives of the Barbary Coast. Quincannon's a great character, very full of himself and sure of his abilities as the peerless detective. He's really very good, but foibles make him a lot of fun.
As I mentioned above, the setting is an important part of the book, with plenty of colorful San Francisco history interwoven into the story. If you're not familiar with this series, give it a try. Great stuff.