Remote. Peaceful. Picturesque. This is how the Mumford Mountain Hotel bills itself in its brochure. & it lives up to this description- most of the time. But this year the hotel is hosting a prestigious conference for the study of forensic science & 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 & heads east. But he & Sara soon find themselves in all too familiar territory- & back in Las Vegas Willows & the CSI team have uncovered trouble of their own.