Transcripts for CNN CNN Newsroom 20130511 19:34:00

i am joined now by ernie allen of the international center for missing and exploited children and former fbi special agent ken landing. ernie, let me start with you. do you think it is a good idea this case keeps hope alive or is there a danger of false hope here? >> allison, there is no such thing as false hope. we need to keep these cases alive. the media forgets, the spotlight dimz, the world assumes these kids are dead, but was it false hope for the families of elizabeth smart, jace i dugard, jessica mullenberg? we need closure to find answering for the searching families. >> ken, how unusual is it the girls that have been gone for so long would still be alive after this many years? >> we first can look at the limited research that we have that tells us that most of these child abduction cases don't belong much beyond 24 hours and

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