>> we know that he had a very serious problem with his anger, with the rage that was within him once he lost control of himself. >> van der sloot's former attorney disputes that assertion saying joran didn't have a documented anger problem, insisting that van der sloot had a really good reputation. natalee spent the night partying with her friends here at this once popular night spot, carlos 'n charlie's. she was last seen around 1:00 in the morning getting into a car with joran van der sloot and two of his friends. she never returned to her hotel. coming up, an agonizing mystery in the caribbean and a mother's desperate pleas for help. >> natalee, you can reach me on your cell phone. i have it, and it's set up for international use now. and i will stay here until i find you. with the capital one venture card we get double miles on every purchase. so we earned a holiday trip to the big apple twice as fast!