Usually Hillary Clinton keeps her dagger stare under wraps. But this past Monday CBS News anchor Katie Couric talked to Hillary Clinton about the tightening race for the Democratic nomination.

Straining to keep her anger under control, Clinton complained, “I have absorbed a lot of attacks for several months now,” and vowed to counter her opponents’ criticisms.

Then Couric asked, “If it’s not you, how disappointed will you be?” That’s when the fixed smile disappeared. Hillary firmly replied, “Well, it will be me.”

But Couric persisted: “I know that you’re confident it’s going to be you, but there is a possibility it won’t be. And clearly you have considered that possibility.”

Mrs. Clinton gave a curt three-word reply: “No I haven’t.”

In that fleeting nanosecond, Hillary’s expression went from incredulous, to ice cold, to scary-condescending. You’ve got to see this to believe it: