This is a detective story that caught my eye because 1) it takes place in Bath, England, which I have visited; and 2) one of the "characters" (the possible murderee) is Beau Nash , whose name I recognized. A Beau, my dear, is the term given to a handsome fashionable young man in late 17th century England. Ever heard of Beau Brummel? Since you are currently online you can look him up!
This is a good mystery so I can recommend it for that reason alone, but if you are an Anglophile, or a Bathphile, or a Beauphile, or even a Peter Diamondphile, you'll enjoy it even more!