Stephanie Birkitt Cheated on Robert Halderman with David Letterman

Stephanie Birkitt, 34, works on the show and lived in Norwalk, Conn., with Robert Halderman until August. Halderman copied parts of Birkitt's diary, which contained details of her affair with Letterman, and tried to use it as blackmail
Stephanie Birkitt, the woman at the center of the Letterman drama, wrote in her diary that she continued having a relationship with Dave, even after she moved in with Joe Halderman, the man who eventually tried to blackmail the comedian