I don't know whether Knox is innocent, but I do know that she did not receive a fair trial. It's absolutely appalling that she was convicted on such scant evidence.
Timothy Egan had an excellent post on the pure absurdity of this case:
In closing arguments, Knox was described as a “Luciferina” and “a dirty-minded she-devil.” Preposterous, made-up sexual motives were ascribed to her. One prosecutor speculated before the jury what Knox may have said to Meredith Kercher before, he claimed, forcing an orgy that resulted in her death:
“You are always behaving like a little saint. Now we will show you. Now we will make you have sex.”
Nobody alleges that Knox said this to Kercher. But prosecutors asked the jury to imagine her saying such a thing.
What century is this? Didn’t Joan of Arc, the Inquisition and our own American Salem witch trials teach civilized nations a thing or two about contrived sexual hysteria with a devil twist?