CSI: Crime Scene Investigation production machine is plowing ahead with work on the CBS drama and filming has begun for the third installment of season 14.

A recent photo from the CSI Writers' Room reveals new details about the October episode.

Opening with a close up of an ant, a voice over goes on to discuss the different crowd behaviors of humans and the tiny bugs. Soon viewers will see the interior of a crowded club, filled with panicking patrons as they try to escape quick moving flames and smoke.

In the wake of the revelers' stampede, the CSI team is brought in to examine the body of a trampled victim. With signs of blunt force trauma, it appears that the victim, Kevin, will have come very close to fresh air before dying. Inside the club there will be three more bodies, presumably burned from the blaze. In the meantime, they will also have to deal with the clubs owner.

John Ratzenberger (Cheers) will portray the buissess owner, according to Entertainment Weekly. While the site does not list the episode that Ratzenberger will appear in, he is described as "jaded, burned out club owner" that is "dazed when his business - and human lives - go up in smoke."

CSI will return to CBS on Sept. 25.