Snake Eyes (1) (S02E01)

In Lake Tahoe, Quincy attends a forensic pathologist convention, while Lee and Danny enjoy a weekend getaway. However, their trip takes a dark turn as both guests and staff begin to suffer from a mysterious illness. Quincy and other forensic experts are summoned to investigate, but as some patients succumb to the unknown ailment, they remain baffled. Compounding the crisis, the casino owner is reluctant to acknowledge the situation, fearing it will hurt his business and scare away customers.