Lawrence Block’s “Burglar” books

eg, Burglars Can’t be Choosers, The Burglar who Studied Spinoza, The Burglar who Liked to Quote Kipling, The Burglar in the Rye, etc. The main character is a bookseller by day, burglar by night and, of course, something always goes awry involving him in a mystery, which he solves with a whimsical, dry sense of humor.