Roger Daltrey appeared in the episode called "Living Legend" (Season 7, Episode 9) as "Mickey Dunn".
Pat Monahan from the band Train.
She wasn't. However, singer Taylor Swift was in Turn Turn Turn, the 16th episode of season 9. That may be what you are confusing it with.
Mykelti Williamson appeared as Chief Brigham Sinclair in the CSI: NY episodes "Heroes" (Season 3, Episode 24), "The Closer" (Season 4, Episode 1), "Indelible" (Season 7, Episode 1), and "The 34th Floor" (Season 7, Episode 7).
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Kellan Lutz played in an episode of Both CSI and CSI New York
The last episode of CSI: NY aired on February 22, 2013.
I believe Grissom's final episode on CSI was Season 9, episode 10 - One to Go.
The part 2 of the CSI episode "Anonymous" is called "Identity Crisis."
Season 10 episode 10
What is the bartender's name in CSI cyber season 2 episode 1
The stripper's name from the CSI episode "Meat Jekyll" is Candy.
Justin Bieber appeared in Season 11, episode 223 of the television show CSI Miami. The name of the episode was called "Pool Shark".