You may find your heart aching for little Peter Kaminski, the 6-year-old whose mother runs off with a prize fighter and leaves him to be raised by his suddenly single father. You may pity teenage Peter Kaminski who, between high school studies and pitching in at his father’s shoe repair business, doesn’t have time to play basketball, But as you read “Keystone,” a new novel by Wilkes-Barre native Dr.