Human blood on a scrap of cloth, hidden behind suitcases – that’s what body tracking dogs can find. A single drop of blood is enough. That’s how well your sense of smell works. We accompany police superintendent Frank Lammers when he and his dogs are searching the house of a serial killer in Hesse. The sadist is said to have murdered and bestially dismembered at least five women. Some of the victims have not yet been found.
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