It is not clear Why "Alpine Fields" is written on the wall with blood. The persons in the family were David, Anne and Lauren. The neighbor Roger was not even a Fields. So what help is got by writing Alpine here? If There were more than one family by the name of "Fields" and so Alpine could have been added to denote location, it seems far-fetched tip in helping to locate them. at least a proper first name of any of them should have been given, "David Fields in Alpine area" type of hint could have been more direct.