Amanda Knox has said she will work to overturn miscarriages of justice after being sensationally cleared of the murder of Meredith Kercher . Knox said she would lobby on behalf of other innocent people who were jailed ‘ because I know how a wrongful conviction can destroy one ’ s life. ’ The American , known as Foxy Knoxy , and former boyfriend Raffaele Sollecito served four years for the 2007 murder of the 21-year-old exchange student . Scroll down for video . Cleared : Amanda Knox is pledging to work for others who claim to have suffered miscarriages of justice . They were freed on appeal in 2011 and Knox immediately returned to the US where she rebuilt her life finding love with ex school friend Colin Sutherland . Then last year an appeal court overturned their acquittal finding the pair guilty of the murder again . Victim : Meredith Kercher was killed while in her bed in Perugia in 2007 . In a shocking twist Italy ’ s highest court last week conclusively cleared the former couple . A third man Rudy Guede is serving a 16 year sentence for the murder . In an open letter to the Seattle Times , Knox said she was ‘ relieved and grateful ’ that the court had found her innocent . She said she felt ‘ lucky ’ to have had the support of those belief ‘ helped me survive when I was at my most vulnerable and almost entirely lost. ’ She only survived the seven year ordeal she said ‘ because my dear family gave up their lives to be with me in Italy , because scores of friends donated their resources , because my lawyers worked tirelessly to bring attention to the evidence that exonerated me , because strangers — from world-renowned DNA experts to former FBI crime-scene investigators to everyday citizens — saw the injustice in my case and spoke out . ' Because of this she said she felt compelled to ‘ give back ’ . She said : ‘ I am all too aware of how lucky I am to have received such strong support . I am also aware that countless other wrongfully convicted persons do not have such support . I will work to give a voice to those individuals . I will do this because I know how a wrongful conviction can destroy one ’ s life. ’ Knox -who was reportedly paid £2.7million ( $ 4million ) for her 2013 book Waiting to Be Heard -could be in line for millions in compensation for time wrongly spent in prison . It is thought the amount could reach seven figures . Suspects : Amanda Knox and then boyfriend Raffaele Sollecito kissing shortly after Meredith 's death . Rudy Guede ( right ) is serving a 16 year sentence for the murder . She has already vowed to return to Italy and it is understood that she will write about the country 's judicial system while she is there .
Vowed to lobby on behalf of other innocent people who have been jailed . She served four years for murder of British student Meredith Kercher . Was freed on appeal with former boyfriend Raffaele Sollecito . Their acquittal was overturned but was finally cleared by US 's highest court last week .