Our House Was Not Broken Into

But we thought it was when Mindy came home last night and saw that the back door was wide open. So we called the cops, but they saw no sign of forced entry. The conclusion is that the wind blew it open, but we are pretty sure that it was closed tightly. There was someone looking at the furnace earlier so it could be that he opened it at some point, but he says he didn't. Anyway, nothing was missing but that might just be because we don't have anything worth taking. That is the best insurance policy.