PASADENA, Calif. (AP) — The murder trial of American college student Amanda Knox is recreated in a television movie that had the actors debating her innocence or guilt.Hayden Panettiere plays Knox and she says it's a riveting story where viewers don't know if Knox committed the crime or not, and she's not sure anyone will ever know."Amanda Knox: Murder on Trial in Italy" airs Feb. 21 on Lifetime.The movie focuses on the trial of Knox, who was convicted of sexually assaulting and murdering her British roommate in the rented house they shared in the university town of Perugia, where both were studying.Knox's appeals trial began late last year in Perugia.