For Meg Jennings and her K-9 companion, Hawk, exploring the ruins of a deserted building is an exciting way to sharpen their skills without the life-or-death stakes they face as part of the FBIs Human Scent Evidence Team. But deep in the echoing rooms of an abandoned asylum, Hawk finds the body of an elderly woman. The victim couldnt have made her way into the derelict building on her own. Before forty-eight hours pass, Meg learns of more cases of elders found dead in neglected urban structures.