American testifies at lurid murder trial
Prosecutors contend that Knox, an exchange student from Seattle, and Raffaele Sollecito killed 21-year-old Meredith Kercher (above) in the apartment she shared with Knox in Perugia, central Italy. Kercher's body was found there on Nov. 2, 2007, and legal experts said she was killed the night before. Franco Origlia/Getty Images
