While playing their hit song "Unstoppable" at a show in Las Vegas, bass player Jay DeMarcus is electrocuted by what is believed to be a technical glitch. The extent of DeMarcus' injury suggests some behind-the-scenes funny business, however, prompting the CSIs to investigate deeper.After some questioning, it's revealed that, just before the show in question, DeMarcus and fellow bandmates Gary LeVox and Joe Don Rooney had a squabble about continuing to make music together. (Don't worry, Flatt-heads, it's just a TV show!) Guest stars Alan Ruck and Brent Briscoe, who play the band's manager and roadie, respectively, could also be suspects."They are the crime story," executive producer Carol Mendelsohn tells TVGuide.com of the band's involvement in the show. "This is not just them playing a concert."
But there will be plenty of music as well. "This episode is a lot of fun," co-producer Phil Conserva says. "[The band] approached Carol and I to see if we'd be interested because they are such fans. Their fans will be able to tune in and watch them perform a song they haven't performed yet. It's going to be a very fun Thursday night."They are on their 10th year as a band, and we're on our 10th season," Conserva says. "It's a real nice union between the two forces."In the episode's other story, Dr. Ray Langston (Laurence Fishburne) and Sara Sidle (Jorja Fox) investigate the death of a former CIA officer. During the investigation, the CSIs cross paths with CIA Associate Director Craig Halliday (guest star Will Patton), who makes Langston an interesting offer and appears to know a thing or two about Langston's mysterious father.Check out a special CSI-themed music video for "Unstoppable" below, which includes some scenes from the episode. Are you excited to see Rascal Flatts on the show?