CSI: Crime Scene Investigation (season 13) Las Vegas ("In Vino Veritas"), Phillips heads to a high school reunion ("Dead of the Class"), and an investigation into a series of Dante's Inferno killings bring the CSIs face-to-face Black Sabbath ("Skin in the Game"), before jeopardizing the life of one investigator. In episode thirteen of the season, "CSI" staged a two-part crossover with its spin-off show "" in which Gary Sinise marked his first appearance in "CSI" and as his "CSI: NY" character Mac Taylor; cast member Ted Danson subsequently appeared in the "CSI: NY" portion of the story. Former cast member William Petersen also returned as Gil
Pilot (CSI: Crime Scene Investigation) it, then Catherine promises her that she's not going to regret it. Brass discovers that Warrick went behind his back to obtain a warrant and pulls him from his case, leaving Warrick enraged and furious at the news. Brass forces Warrick to shadow Holly. However, Warrick still has to place the bet for Judge Cohen and leaves Holly at the scene alone with a police officer. Unbeknownst to the CSI team, the officer leaves Holly's scene, leaving her to process the scene alone. The suspect returns to the scene and attacks her by pulling out a gun. Meanwhile, Grissom takes