Katleen Abbeel Book order (chronological)

Required to both question and protect a traumatized seven-year-old girl who is the only witness to a murder, rookie detective Huldar and psychologist Freyja navigate elusive clues left behind by an unusually slippery killer.

A time capsule is unearthed from a school playground - containing a threat of deaths to come. As Freyja and Huldar look for the writer, the murders start...