CBS has begun airing the promo for "CSI: Trilogy", a crossover event that will take place in the second week of November. Dr. Raymond Langston from " CSI : Crime Scene Investigation" will appear in the show's spin-offs, " CSI more

In anticipation of the week-long CSI crossover episodes next week--they call it "CSI Trilogy" and I call it "Langston week"--here's a behind-the-scenes video on how the whole thing panned out. Apart from the usual details on what more