遺世而獨立，空曠而靜謐，如夢如幻的世外桃源——這是茂福山頂飯店宣傳手冊上的廣告文案；在大部分時候，這樣的形容詞一點也不為過，甚至可以說是名符其實。今年，頂尖犯罪學學家齊集在此飯店，準備參加即將召開的鑑識科學研究會議，而犯罪現場調查小組組長吉爾．葛瑞森當然也在受邀之列。
為了這張不容拒絕的邀請函，在將部門託付給能幹的副手凱薩琳．韋羅斯之後，葛瑞森便與組員莎拉．賽德爾一同飛往東部。然而，他和莎拉卻隨即發現自己身陷於一個再熟悉不過的場景之中；於此同時，留守在拉斯維加斯的凱薩琳，華瑞克．布朗，與尼克．史多克斯也發現，他們遭遇了棘手的案件。 兩處犯罪現場，兩具屍體，一具遭到焚燒，一具曾被冰凍。該如何找出兇手遺留下來的蛛絲馬跡，進而解開謎團並偵破命案，對於這群CSI探員又是一項新的挑戰。
Remote. Peaceful. Picturesque. That’s how the Mumford Mountain Hotel bills itself in its brochure, and it lives up to its billing — most of the time. But this year, the hotel is hosting a prestigious conference for the study of forensic science, and the organizers have extended CSI head Gil Grissom an invitation he can’t refuse. Joined by fellow investigator Sara Sidle, Grissom leaves the department in the capable hands of Catherine Willows and heads east. But he and Sara soon find themselves in all too familiar territory — and back in Las Vegas, Catherine, Warrick Brown, and Nick Stokes have uncovered trouble of their own.
