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 recruitment and training programs have seen a massive increase in applicants, with a far wider range of people now interested in something previously regarded as a scientific backwater. The ""CSI" effect" is a reference to the alleged phenomenon of "CSI" raising crime victims' and jury members' real-world expectations of forensic science, especially crime-scene investigation and DNA testing. This is said to have changed the way many trials are presented today, in that prosecutors are pressured to deliver more forensic evidence in court. Victims and their families are coming to expect instant answers from showcased techniques such as DNA analysis and