Dateline NBC

Michael Phelps; George Clooney; International Kidnapping (17x23)

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Matt Lauer interviews Olympic swimmer Michael Phelps. In addition, George Clooney reflects on his cause to end the Darfur crisis while on a trip to the border of Chad and Sudan with correspondent Ann Curry. Also: Meredith Vieira chronicles a father's quest to bring his young son home to the U.S. from Brazil.