Before Briggs became known for the Mercy Thompson series of urban fantasy she was one of the first to adopt the lighter style that replaced the heavy epic fantasy of the 90's. When Demons Walk is one of four books she wrote that only qualify as a series because they all take place in the same world. Shamera, "Sham", is a wizard, thief, and occasional rebel in Southwood which was conquered ten years ago by the Cymbellian empire. She can't forgive the conquerors for killing her parents and blinding her Master, the former Royal Magician. Kerim, the Reeve (governor) of Southwood, was once a great warrior and favored by the god Altis but his body is weakening for no obvious reason and he spends most of his days in a wheeled chair. The Cymbellian's regard magic as local superstition but when Kerim's half-brother dies under mysterious circumstances he needs the help of Southwood's remaining wizard.