Broken by Karin Slaughter

Broken : Paperback : Cornerstone : 9780099509769 : 0099509768 : 23 Jun 2011 : When the body of a young woman is discovered deep beneath the icy waters of Lake Grant, a note left under a rock by the shore points to suicide. But within minutes, it becomes clear that this is no suicide. It's a brutal, cold-blooded murder.