Nancy Grace's outraged disbelief at the verdicts in the Casey Anthony trial led many to question if her head would, actually, explode on-air. It did not. However, her stunned reaction -- "somewhere out there, the devil is dancing tonight" -- did set the Twitterverse afire.

Grace has been covering the story on her eponymous primetime show since two-year old Caylee Anthony was reported missing in mid-2008.

Her intense, often controversial, scrutiny of the case produced record ratings for CNN's Headline News and may also have influenced the other TV networks' coverage as they acted in the wake of her escalating ratings.

'The Wrap' reports that Grace's single-minded pursuit of the "truth" about Caylee Anthony's death put HLN in second place during June, the 29-year-old channel's best ratings month ever. And it also helped the network challenge Fox News in the coveted adults aged 25-54 demographic during primetime.