[John W]

Yes, and as far as we know now, no.

[my_pointy_head_is_sharp]

Stephanie Birkitt was an assistant to Letterman on the "Late Show" and frequently appeared on camera with the host in comedy bits.

Wow, who knew! Still, it seems odd that her "boyfriend" (for lack of a better term) was the one who was trying to extort Letterman. Could she really NOT have been involved?