Blood Lines

How do you catch a killer who leaves no trace?When a caring, upstanding social worker is killed with a single, precise stab to the heart it appears to be a robbery gone wrong. But for Detective Kim Stone, something doesn't add up. Then a local drug addict is found with an identical wound, and Kim knows instinctively that she is dealing with the same killer. But with nothing to link the two victims except their cold, calculated murder, this could be her most difficult case yet. As the bo