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
CSI: Crime Scene Investigation by Frame"). "CSI" spawned three spin-off series, a book series, several video games, and an exhibit at Chicago's Museum of Science and Industry. At the time of its cancellation, "CSI" was the seventh-longest running scripted U.S. primetime TV series overall and had been recognized as the most popular dramatic series internationally by the Festival de Télévision de Monte-Carlo, which awarded the series the International Television Audience Award (Best Television Drama Series) three times. "CSI" became the second-most watched show on American television by 2002, finally taking the top position for the 2002-2003 season. It was later named the most-watched show