The team must find out if one team’s fun led to murder in the New York version of the Iditarod. Another case involves the death of a kidnapper in an empty apartment and where is the kidnap victim?

New York City has everything: Times Square, billboards, parties, and a dead model in a giant martini glass. Now the team must find a party crasher who crashed one party too many.

Danny is devastated when a young boy he knows is killed in the midst of a bodega robbery. Meanwhile, Lindsay, Stella and Flack investigate the death of a man killed by an exploding cigar that is connected to a joke shop proprietor and another tragedy that occurred years before.

A lethal pipe-bomb blows a Manhattan townhouse and valuable evidence to pieces, forcing the CSIs to get creative in reconstructing the damaged clues that ultimately lead to the bomber.

The Compass Killer is back, and adds yet another to his circle of victims -- but this time the CSI squad knows his name; Flack's alcoholism threatens to derail his career...