October Surprise? James O’Keefe is promising quite the October surprise — a video of Hillary Clinton allegedly “demeaning and disparaging” black people.

The conservative journalists and prankster dropped the news of his alleged video on Twitter late on Wednesday evening, claiming to have video that would likely sink Clinton’s campaign. And it comes just as the Democratic Party’s candidate is on a high after her resounding debate win over Donald Trump.

O’Keefe, who has been a thorn in the side of Democrats ever since he first released secretly filmed videos at ACORN offices more than seven years ago, made the claim that he has video evidence of what sounds to be Clinton’s racism.

Wrong. We have tape of them demeaning and disparaging black people in the worst ways. That will matter. Coming in October. https://t.co/p5rxZjYmXx "We have tape of them [Clinton] demeaning and disparaging black people in the worst ways. That will matter. Coming in October."