''CSI: Miami'' is only a few weeks old and is doing well in the ratings, but it's already claiming its first cast casualty. It's Kim Delaney, who was a high-profile late addition to the cast just before the season started, and who will now be written out of the show after just 10 episodes, CBS announced Thursday. For all the forensic chemistry on the series, there apparently wasn't enough dramatic chemistry between Delaney and star David Caruso and the rest of her costars.
Producers added Delaney's character, Megan Donner, after last May's pilot aired as a special episode of ''CSI: Crime Scene Investigation.'' They had hoped to duplicate the sparks between William Petersen and Marg Helgenberger on the original ''CSI.'' The Emmy-winning actress, like Caruso, was an alum of ''NYPD Blue,'' though their runs on that show did not overlap. However, Delaney and Caruso never jelled, and she seemed to have little to do on several episodes. In a statement, CBS said, ''The network, the production companies and the producers jointly arrived at this decision upon recognizing that the character of Megan Donner was becoming less integral to the series as the season progressed.''
The statement said that the Donner character's departure would be explained in an upcoming episode but did not reveal details. Delaney's last appearance on the show will be Nov. 25. She will not be replaced.
It's been a tough year for Delaney. In January, she was arrested for drunk driving near her Malibu home; she pleaded no contest and was sentenced to two years' probation, fined $300, and ordered to take a safe-driving class. This spring, her ABC legal drama ''Philly'' was canceled after just one season. Maybe CBS can find a place for her on another ''NYPD Blue'' alum's hit show, Amy Brenneman's ''Judging Amy.''