I would never give a name up, no matter what unless the cops could prove it with DNA & of course a body. I don't ever think anybody should be convicted for murder on circumstantial. It's a violation of true justice. Does that mean that a killer goes free, yes but rather that then an innocent person in jail. That neighbour is innocent until proven guilty. He might be some other criminal who did something stupid & that's why he burned the van but it can't lead to him being jailed for murder. That's simply not justice.