Transcript for Peter Kassig's Parents React to Grisly ISIS Video of Their Son's Death
Now, to the race against time. An American woman still being held after the young man was beheaded. Tonight, something very different about the new videos, the faces of Isis fighters uncovered. Brian Ross with the fears over that American woman tonight. Reporter: Tonight, U.S. Officials fear what this Isis executioner may do with his final American hostage, a 26-year-old woman threatened with the same fate as peter kassig. Today kassig's parents, ed and Paula, ask for prayers for their son and for the others still being held captive. Pray also for all the people in Syria, Iraq and around the world. Our hearts are battered but they will mend. The world is broken, but it will be healed in the end. Reporter: Their 26-year-old son, peter was in Syria as a volunteer medic when he was captured just over a year ago. In captivity, kassig converted to Islam and changed his name to Abdul rahman. But none of that made any difference to Isis. This is peter Edward kassig, Reporter: The masked man with a british accent, dubbed by some jihad John announced kassig's beheading just as he had done with American journalists James Foley and Steven sotloff. But in this Isis video there was no effort to hide the location with obvious landmarks of buildings, roads, farmland. It's absolutely essential to bring this individual to justice. Reporter: On the same Isis video jihad John leading 16 Isis fighters in a chilling mass beheading. One of them already identified as a 22-year-old citizen of France. And now, one woman is believed to be the last American hostage held by Isis.
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