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Amanda Knox mulls return to Italy as book launched

Amanda Knox is pictured in court during her appeal trial in Perugia on June 18, 2011. Knox may return to Italy for a murder retrial, she said as she launched a memoir about her nightmare, including frank details about her time behind bars.Amanda Knox may return to Italy for a murder retrial, she said as she launched a memoir about her nightmare, including frank details about sex, drugs and her harrowing time behind bars.