Charlaine Harris Sookie Stackhouse southern vampire books.
Kim Harrison The Hollows books the combination of a witch, pixie, vampire elves and demons is hilarious. Especially Jenks the pixie.
I second the Elizabeth Peters --Amelia Peabody Egyptian archeology books.
Dana Stabenow—Kate Shugak Alaskan mysteries
I find frequently find new audio books by looking up the narrator of a book in which I have enjoyed their presentation , and find other books they have read. I have found several new authors this way. Check out narrators:
Johanna Parker
Susan Ericksen
Marguerite Gavin
C.J. Critt
George Guidall
Dick Hill