[…]

Question: What happened to the Sara-Grissom motel scene that, according to TV Guide’s Oct. 1 cover story, was supposed to take place on last Thursday’s CSI?! William Peterson wasn’t even in that episode! - Jennifer

Ausiello: There’s a really good explanation for this, and I’m going to let exec producer Carol Mendelsohn give it to you. “Billy had a death in the family and the script was rewritten to accommodate his absence,” she says. “The scene itself was episode-specific, since the case being investigated took place several hours outside of Vegas, which placed Grissom and Sara in a hotel overnight. But stay tuned to see if the story line reemerges in a future episode!” I told you there was a really good explanation.

[…]