Good thinking Dad (may I call you Dad? Daddy-o? Pop? lol)
The shed is out the front of the house, good place to throw stuff in from the truck after work type set-up.
Maybe (pure speculation here) he has harmed Samantha (I can't say the "k" word just yet), maybe threw clothes in there (gun powder residue, blood
evidence) or something else. It would not raise any suspicions because it is something he regularly does. IF those items had since been moved they may be going on a long shot that it hit a wall in there or something.
This would also make sense if we believe that he did leave town on the 2nd, that is a very small window of time to do all that he did, supposedly, after the abduction.
It is sounding more and more like he did this on his own but I still have a feeling there is more involved to this including people, and I can't get the drug bust earlier out of my head, nor JK.
The other thing that turns me off a random abduction is that it would probably start out as a robbery - family holiday coming up, short of cash - rob the coffee shop ... but really? Even starbucks with its over priced coffee and cakes and everything else you can purchase there is not going to have a decent amount of money for the nights takings. This little hut seems to only have coffe, is in the middle of parking lot - I just can't see cash for the family vacaybeing enough. And that leads to why did he take her? She may have been able to recognise him but that would have been futile because he knew he was leaving the city the next day. So his description could have gone out but he would have been gone. It wouldn't have made the 10 o'clock news that night, nor the paper the next day.
Maybe he was a regular and she would be able to name the business off the side of the truck - still goes back to there can't have been a lot of money in that hut.
There has to be more to this. Something else. I am really scared for Samantha now, that feeling has been around for a couple of weeks but it is really strong now (and no I am not psychic - but I do know some lol)