Rubenstein's Tom Keaney Repping Letterman

Last night on the “Late Show,” host David Letterman revealed that he had affairs with staffers on the show and that someone had tried to blackmail him for $2 million to keep the story secret. That someone is a CBS News “48 Hours” employee, Robert J. Halderman, who is currently under arrest.

Tom Keaney of Rubenstein handles all PR for Mr. Letterman. He has not returned calls as of the time of this post. A CBS spokesperson told