police announce he's their prime suspect. >> the most striking thing to me when i think about natalee holloway and stephany flores, both of them together, they had one common denominator, it was joran van der sloot. stephany flores was with joran van der sloot five years to the day that natalee holloway was last seen. and that was the last time stephany flores is seen. >> peruvian police track down van der sloot who fled to chile the day after the murder. under interrogation in peru, joran told investigators that he knows the location of natalee's body. but wouldn't say what happened to her that night. beth holloway hears the news and immediately heads to peru. van der sloot had been e-mailing her in march. the fbi monitored the entire exchange. >> his original message, for