简介：Inaplaygroundinthecentreoftheurbanidyll,thepolicefindaburiedwoodenboxcontainingawell-knownandrespectedprosecutor.MartinBeckandhispoliceteaminitiallysuspectaseriouslycriminalMC-leaderoftheattack,butoneprettysoonhastore-evaluatethecaseoncetheMC-leaderisfoundmurderedinasimilarwoodenbox.Soon,morewoodenboxesarefoundandthepolicerealizethattheyarepartofacatandmousegamewithacrazyserialkiller.Theinvestigationsoonshowsthatthereisavagueconnectionbetweenthevictimsintheshapeofa9yearoldevent.WhatMartinBeckdoesnotsuspect,however,isthatalsohisownlifeisatstake,asthemurdererhaschosenhimasthenextvictim…