<p>Donald Trump is going all in with the Friday the 13th motif in attacking Ben Carson.</p><p>In a video posted to <a href="https://instagram.com/p/-B_ci4mhdA/" target="_blank">Instagram</a>, spooky, suspenseful music plays as footage of Carson speaks about past claim of physical violence, one that he attributed to his "pathological temperament" in his book "Gifted Hands."</p><p>"I had a large camping knife, and I tried to stab him in the abdomen," a younger Carson says in the video, before a clip of CNN's report <a href="http://www.cnn.com/2015/11/05/politics/ben-carson-2016-childhood-violence/" target="_blank">last week</a> shows a man who appeared to question Carson's autobiographical account.</p><p>"What?" the former neighbor tells CNN in the video, who says "no" with a shake of the head when asked if it fits with the person he knew.</p><p>The video cuts to on-screen text asking, "VIOLENT CRIMINAL?," followed by, "OR PATHOLOGICAL LIAR?"</p><p>"WE DON'T NEED EITHER AS PRESIDENT," the next slide reads.</p><p>Carson seemed to think this line of attack would end badly for Trump, reacting to the post while taping an interview with Yahoo News' Katie Couric.</p><blockquote class="twitter-tweet" lang="en"><p lang="en" dir="ltr">Just asked <a href="https://twitter.com/RealBenCarson">@RealBenCarson</a> abt this <a href="https://twitter.com/hashtag/Trump?src=hash">#Trump</a> Instagram: <a href="https://t.co/AH654EFmmS">https://t.co/AH654EFmmS</a> Carson says "I think it's gonna hurt him."</p><p>— Katie Couric (@katiecouric) <a href="https://twitter.com/katiecouric/status/665202184326377472">November 13, 2015</a></p></blockquote><script async="" src="//platform.twitter.com/widgets.js" charset="utf-8"></script><br>