Vera investigates the case of a murdered social worked named Jenny Lister, who was universally considered to have been principled and popular. However, in an overworked and understaffed social work system, a notorious case involving the death of a child seems to hold the key to solving the killing. As Vera pursues the truth, she discovers the real secret at the heart of Jenny's death - and the killer who will stop at nothing to keep it hidden

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