Not very pleasant—ending up beside a corpse if you don’t have proof that the person is indeed dead. Of course, any even slightly experienced doctor would instantly identify the cause: cardiac arrest. But why the heart stopped, why it ceased to pump blood through the body—that’s another question. And the answer is equally obvious: the blood simply leaked out through a hole made by a small but sharp piece of metal. After that, the heart had nothing left to do but freeze…