Accused murderer Jodi Arias wrapped up her 18 days on the stand in her Arizona trial on Wednesday. But now, some shocking and disturbing video has emerged that could pile further doubt upon her not-guilty by way of self-defense plea.

Arias has insisted that while she did lie to police during her initial 2008 interrogation when she denied murdering boyfriend Travis Alexander, she is now telling the truth when she says she shot him in the head, stabbed him 27 times and slit his throat, in self-defense. The new video footage, obtained by Fox News from Arias' June 2008 interrogation, shows the defendant participating in bizarre behavior for someone who had been questioned for four hours, often in tears.