Down Cemetery Road by Mick Herron

After a house on her Oxford street explodes, a restless woman becomes obsessed with the suspicion that a child vanished in the blast. Her amateur investigation draws in a wary private detective and unravels a web of lies, missing identities, and corporate secrets, pitting them against dangerous people with plenty to hide. Darkly comic and twisty, it turns an ordinary life into a perilous hunt for the truth.

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