Stephanie Birkitt

Stephanie Birkitt

Stephanie Birkitt has been identified as one of the women involved in the David Letterman extortion plot. Birkitt, Letterman's former assistant who has made several appearances on the "Late Show," had lived with alleged blackmailer Robert "Joe" Halderman, who allegedly "was in possession of Birkitt's diary, correspondence and photos -- which he says incriminated Letterman," according to TMZ. Sources told TMZ that Letterman and Birkitt had a sexual relationship taht ended before 2003, when his son Harry was born.

Sources tell RadarOnline.com that "Birkitt and Letterman slept together for a period of time before he married his girlfriend Regina had their son Harry" and that Birkitt is reportedly "mortified Halderman is using her fling with Letterman to blackmail her boss." So who is Stephanie Birkitt? Birkitt is a 1997 graduate of Wake Forest University who interned in the writers' department at the "Late Show" in spring 1996. After a stint at "48 Hours" — incidentally, where Halderman worked as a producer — Birkitt moved back to the "Late Show."

After a job as producer, Birkitt applied to be Letterman's assistant. "I heard there was a job in Dave's office opening up and I applied, because I didn't think I was much of a news hound, as it was a little too serious for my personality," she told the New Hampshire Union Leader in 2004 (via Nexis).