PeterBoyd探长指挥着一支经过多种训练的警探和科学家的警察队伍-悬案小组，使用现代的方法和原来调查时还没有的新科技来专门调查的未破获的老谋杀案。Det.Supt.PeterBoyd(playedbyTrevorEve)istheleaderofamulti-disciplinepoliceteamofdetectivesandscientists,theColdCaseSquad,whichinvestigatesold,unsolvedmurdercasesusingmodernmethodsandnewtechnologythatmaynothavebeenavailableduringtheoriginalinvestigation.LedbyDetectiveSuperintendentPeterBoyd(TrevorEve)theColdCaseSquadinvestigatesseriouscrimeswhichhavegoneunsolved.Armedwiththelatesttechnologicaladvancesandoldfashionedhardwork,PsychologicalProfilerGraceFoley(SueJohnston),ForensicPathologistFrankieWharton(HollyAird),DetectiveConstableMelSilver(ClaireGoose)andDetectiveSergeantSpencerJordan(WilJohnson)wakethedeadforcluesandanswers.
凯文·苏斯曼,劳伦·拉普库斯,布莱恩·波塞恩,约翰·罗斯·鲍伊,路易斯·穆斯蒂略,雅沙·斯莱瑟斯,维奥莱特·林茨,布兰顿·莫拉莱斯,Brooklyn,Rose,Gastón,Brouet,丁瑞奇,Anthony,Giangrande,阿蒂克斯·巴塔坎,乔什·布雷纳,瑞恩·卡特赖特