Jessica Heeringa disappearance one week later

Jessica Heeringa vanished a week ago and still hasn't been found. One person of interest (out of many) has been questioned at least twice now and given a polygraph test, but hast not been cleared -- unlike several other persons of interest. Police have not released the identity of this person of interest, but we know that he's a registered sex offender in the area. He has not been named a suspect yet. As day seven of the search for the missing woman begins the evidence that exists thus far points to a negative outcome. I've done my best to compile a working timeline surrounding this case in hopes of creating a comprehensive collection of commentary on this case, but as it drags on for a week (and possibly longer) I'm beginning to wonder what the actual timeline is.