Unanswered questions in the Amanda Knox case

[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/WORLD/europe/03/23/italy.student.kercher.trial/art.knox.sollecito.split.afp.gi.jpg caption="Both Raffaele Sollecito (left) and Amanda Knox deny charges of murder and sexual assault. "]

Amanda Knox, 21, is an American college student from Seattle, Washington, who is on trial for murder in Perugia, Italy. The case has given Knox almost pop star status there.

Knox and former boyfriend Raffaele Sollecito, 24, are charged with murdering and sexually assaulting one of Knox's roommates, British exchange student Meredith Kercher, on November 1, 2007. They have pleaded not guilty.

There are many unanswered questions to this case.

Take a look at this coverage and find out the  six key questions that must be answered