Maine, 1789: The Kennebec River freezes, entombing a man in the ice. Martha Ballard is summoned to examine the body and determine the cause of death. As the local midwife and healer, Martha is good at keeping secrets. Her diary is a record of every birth and death, every murder and debacle that unfolds in the town of Hallowell. In that diary she also documented the details of an alleged rape that occurred four months earlier. Now, one of the men accused of that heinous attack has been found dead in the ice. While Martha is certain she knows what happened the night of the assault, she suspects that the two crimes are linked. Over the course of one long, hard winter, Martha’s diary lands at the center of the scandal and threatens to tear both her family and her community apart.