I think that Amanda and Sollecito are guilty,because first he accused Patrick lumumba,after change idea.
Now if is only Guede that killed Meredith,;
Why Amanda and Raffaele don't stop him? And why they create a false burglary?
Why Amanda don't want to turn back to italy ?
If I'm innocent,I'll turn back to to prove my full innocence ?
even if they don't directly killed Meredith,are Guede's accomplices , however, and have to pay for it.

That's what I think Camarel