Painted in Blood

''The Sleeping Nymph'': a work of art of magnetic beauty, painted by a young partisan fighter during the last days of the Second World War. A painting carrying a shocking secret hidden in the red pigment on the canvas, made with the blood of a human heart.

But whose heart?

There is no body, no confession. Only that faint trace of blood. And that''s what leads commissioner Teresa Battaglia - hersel...