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: The Experience "CSI: The Experience", visitors use the scientific information they gathered to answer a series of multiple-choice questions on touch screens. After completing the survey, visitors proceed to a recreation of Gil Grissom's office to present their case. Exhibit-goers can compare their scientific findings to those of expert crime scene investigators. The exhibit is geared toward adults and youth ages 12 and above. "CSI: The Experience" opened with a press preview on May 23, 2007 at the Museum of Science and Industry which was attended by stars from the cast of "CSI: Crime Scene Investigation", including William Petersen, Marg Helgenberger, Gary