Hey again guys!

First of all - this is PURE SPECULATIONS though I do believe I'm on to something.

After watching clips from Primed and Sam's nasty flashbacks I thought of something. What we saw at the very end could be Sam burying someone or killing someone.
What I believe is that - and I admit blankly this is a longshot - Sam could have seen or been through severe abuse by her dad/stepdad and/or even her husband.
I think that Sam might have killed this abuser or whatever by accident - I mean it has been done before! Does anyone remember Kimberly from Melrose Place who murdered the gartner as a little girl because he was raping her mommy?
I think the same might have happened here - Sam killed someone by instinct and covered it up and what we saw was her digging the grave and then at the same time taking her anger and frustation out on this very same person's dead body.

It would result in the Sam we see now; very closed off and scared as hell to let anyone in. What we saw when she saw her self lying in Abby's place we saw herself facing her past nightmares though she didn't want to.
She saw her own guilt and fear stare back at her and she probably knows that she'll have to face them soon.

Her past is coming back to haunt her and she knows it.

/H