After years of revolving-door foster care, one home to another, Owen and Martha are suddenly moved to a house in Toronto, where Sister Charlotte comes to take care of them. When Sister Charlotte limped through the front door of our house, I shouldn't have been surprised. But I was. Her face was lined, her skin grey, and her hair dead and stringy, as though she belonged in a coffin. She didn't wear a nun's white head-cover; her...