Amanda Knox spent nearly four years in an Italian prison for a murder she didn't commit. After her exoneration, she reached out to the man who prosecuted her case. Knox's new memoir is Free.

Amanda Knox, the American woman who was convicted of and later exonerated for murdering her former roommate in Italy over a decade ago, opens up about her new memoir.

Amanda Knox, convicted, then acquitted of murder, discusses her time in an Italian prison and what freedom means to her now.