Avon Calling - Tommy Avon Mysteries, #1

Retired from the Chicago PD, Tommy Avon decides to clean up Chicago. It begins when his niece Sarah  is attacked by a limousine driver. Nobody is safe when his niece Vicky, who likes to feed hit men into a wood chipper,  arrives  with her Iranian friend Tara. They transform Sarah from a meek attorney into a killer elite, and wage war on several criminal gangs. Lots of action and lots of humor.