The Burning by Jane Casey

Detective Maeve Kerrigan is drawn into a tense, relentless hunt when a ruthless killer begins targeting young women and destroying the evidence by setting their bodies alight; as the investigation uncovers disturbing links and false leads, Maeve and her team race to stay ahead of a methodical predator who seems to be always one step away, forcing her to confront professional pressures and personal vulnerabilities as the case builds to a dangerous, twist-filled climax.

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