But Harvard Law Professor Alan Dershowitz said that Italian prosecutors might very well extradite Knox. And, if retried, she "likely will be found guilty -- because the evidence supporting a conviction is pretty strong."
Knox, now 25, has established a fan base in the United States "because she has a beautiful face and an angelic appearance," Dershowitz said. "But remember, she originally admitted she was at the scene of the crime and she tried to blame an innocent man -- for which she was also convicted."
After Knox and Sollecito were detained for questioning in the killing, she allegedly confessed to being at her home when Kercher was killed and implicated Patrick Lumumba, the owner of a bar where she worked.
Lumumba was detained, but was released after two weeks when his alibi was corroborated: he had spent the night of the murder talking to a customer in his pub in Perugia, police say. He went on to sue Knox for libel, winning 40,000 euros ($54,000) in damages.
Dershowitz said the case was not well tried the first time. "But at a second trial, there's a very high likelihood that they may very well convict her."
He predicted that Knox would resist any extradition attempt. But even if she were to succeed in that, "she remains a prisoner in the United States, because Interpol will put a warrant out for her and, if she travels anywhere outside the United States, she'll be immediately arrested and turned over to Italy."