It's time for another big goodbye on CSI (9 p.m., CBS/Ch. 2). Original cast member Marg Helgenberger is leaving the series and taking her character, Catherine Willows, with her.
And despite the fact that Catherine was shot in last week's episode, she won't be leaving in a body bag.
But after 11½ seasons and 263 episodes, it's probably time to go.
Elsewhere on TV ...
Whitney (7 p.m., NBC/Ch. 5): Roxanne hires Whitney as her assistant and office spy.
Nature (7 p.m., PBS/Ch. 7): A look inside the "Fortress of Bears" in Alaska.
American Idol (7 p.m., Fox/Ch. 13): Auditions continue.
One Tree Hill (7 p.m., CW/Ch. 30): Dan helps Haley; Julian makes a major mistake.
NBA (7 p.m., ROOT): Toronto Raptors at Utah Jazz
Criminal Minds (8 p.m., CBS/Ch. 2): A serial rapist is going after his same victims again.
Nova (8 p.m., PBS/Ch. 7): Using science to identify stolen artwork.
Hot In Cleveland (11 p.m., TV Land): Victoria's daughter drops a bombshell.
Royal Pains (11 p.m., USA): A rock band falls ill.
The Exes (11:30 p.m., TV Land): Phil is nervous when Holly starts dating his top client.
