Now think about a statement Sgt. Ben Hoster made and was quoted in the news:
"There are only two people that know the elements of this crime. ... That would be Allison and her murderer," Hoster said.
http://hosted.ap.org/dynamic/storie..._KILLED?SITE=AP&SECTION=HOME&TEMPLATE=DEFAULT
What an interesting choice of words Hoster uses. Elements of this crime.
Almost like the elements of a plot.
In a plot you have 5 basic elements:
The Five Elements of Plot Structure
1. Exposition: The Beginning
Every story must have a beginning. The start, or exposition, is where the characters and setting are established. During this part of the novel, the conflict or main problem is also introduced.
2. Rising Action: Introduction of the Problem or Conflict
After the characters and main problem have been established, the main problem or conflict is dealt with by some kind of action. In this part of the story, the main character is in crisis. This is the place for tension and excitement. The complication can arise through a character's conflict with society, nature, fate, or a number of themes. In this part of the story the main character is aware a conflict has arisen and takes some kind of step to battle this crisis.
3.Climax: The High Point
The climax is the high point of the story. It is the main event or danger that the character faces. This is the darkest moment, the worst challenge the character must oppose. At this point it looks as if the character will fail, and will never get what he/she wants. The turning point may be either physical or emotional. In a romance, the girl may turn the hopeful lover down, in an action story, the character may be surrounded by enemies with no chance of escape.
4. Falling Action: Winding Down
Following the climax, the story begins to slowly wind down. Falling action, one of the two final story elements, shows the result of the actions or decisions the character has made. This eventually leads to the final part of the novel, the crisis resolution.
5. Resolution: The End
The resolution, also often called denouement, which is French for "to untie" or "unraveling", is the conclusion of the story. Here, the conflicts are resolved, all loose ends are tied up, and the story concludes with either a happy or sad ending.
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His choice of words indicates to me that he thinks there is a "story" behind this and that only Allison and the murderer know the story. But Allison is dead. But her phone and computer and the knowledge her friends have is not.
Speaking of phone. Do they have the phone? Does anyone know if the killer took the phone? Has there been mention of it?
) I do think that Allison made great use of FB to chronicle her events and activities. She didn't post jokes and things like that, at least not that I'm aware, but she seemed to post every important event. 
