Where No Light Should Be

Nineteen people winter on Kettle Island, and one of them is a murderer. Effie Grantham, fifteen, keeps the light at Dogtooth Point under the shadow of a lie: that her grandfather's confused beam sank the steamer Marietta with all hands. The last mail boat of the season brings a dying stoker carrying a coded chart and the truth — and by morning he is dead behind a latched door. The lake is freezing. The boats are gone. Someone is counting witnesses.