Here are the New York Times, CNN, and NBC. Here is Wikipedia for background.
The case has made several appearances on LessWrong; examples include:
- You Be the Jury: Survey on a Current Event (December 2009)
- The Amanda Knox Test: How an Hour Beats a Year in the Courtroom (December 2009)
- Amanda Knox: post mortem (October 2011)
- Amanda Knox Guilty Again (January 2014)
....No. Not even slightly. This line of questioning MIGHT be relevant if you didn't already have the killer identified, with overwhelming physical evidence pointing towards them. You don't need to explain why Knox turned her phone off, because you already have the killer and every single piece of physical evidence at the crime scene accounted for.
Well, for what it's worth their wounds and bruises guy didn't think it was a single killer. And when someone's murdered at their own place in the dead middle of the night, often the cohabitants are involved.