How quickly she disappears

"It's been twenty years since Elisabeth's twin sister, Jacqueline, disappeared without a trace. At thirty Elisabeth is living in a small Alaskan town; she's in a loveless marriage and has a young daughter she loves but who reminds her too much of her long-missing sister. Elisabeth clings to the impossible belief that her sister is still alive and that they'll be reunited. Then Alfred, a stranger, arrives in town and claims to know exactly what happened to Jacqueline. He'll reveal the truth... but only if Elisabeth fulfills three requests. Requests which mean putting herself--and her family--in danger"--OCLC.