Trace Elements

'They killed him. It was bad money.' A dying hospice patient gasps these cryptic words about her recently-deceased husband, who lost his life in a motorcycle accident. But what appears to be a private family tragedy turns into a bigger enigma when Brunetti discover the victim's ties to Venice's water supply.

With the help of a Questura secretery, Elettra Sorzi, Brunetti will unveil the secret that lies behind the dying woman's accusation - one that threatens the health of the entire region.