In the March 2 episode, Chicago law firm partner "Diane Lockhart ," played by Christine Baranski , engages the ballistics expert to help her with a murder trial. In her office, he notices a picture, on her credenza, of her with Hillary Clinton. Visiting him at his home office on a farm, she notices on his credenza a photo of him next to Palin: "Is that photo-shopped? You and the Barracuda?" He doesn't deny he "photo-shopped" it: "No, she's at a pro-life rally."
After his testimony exonerates her client, he sends her a gift in a box: Sarah Palin's biography: Going Rogue, promptly her to chuckle. In return - the scene in the accompanying video clip - he sends her the book ridiculing Palin. He opens the box, picks up the book and discovers all its pages are blank.