The second search of Mark's house came 7 weeks after the parents were informed that Dylan's remains were found on Middle Mountain. We know from Mark's statement that carpet, flooring, clothing, a cell phone and a fireplace poker were taken from his house, and that a hole was dug under outside stairs (I see some outside stairs to the right of his house, next to the garage). I am brainstorming reason why the items Mark said were taken would be on a search warrant for his house.
My first thoughts on reasons why these items may have been on a search warrant:
Cell phone-possible because of the videos he took and posted. Possibly because of texts he made to other people, or other people made to him. Possibly because of pictures on phone. Possibly just another random phone in the house.
Clothing-Suspected that there may be evidence on it. Suspected it may have belonged to Dylan. Suspected it may not have belonged to anyone in the house and some intruder left it.
Carpet-Possible that previous tests came back inconclusive or positive for something. Possible looking for fibers, dirt, ash, something else in the carpet that matched something at the crime scene. I wanted to say possible trying to rule out the carpet fibers, but they would have taken a small piece from some unobtrusive spot if that were the case. Possible evidence of something going through carpet (like a fireplace poker or knife or bullet)
Flooring-suspect something went through the carpet to the floor and something may still be there (dirt, ask, fluids, etc). Possible evidence of something striking the floor (like a fireplace poker or knife or bullet. Or icepick or something similar that would show under the carpet, but not on the carpet).
Dig hole-Possibly reported that someone was digging there. Searching for something buried. Searching for evidence of something being left there or mixed in with the dirt. Dirt/items under the stairs being removed or moved.
Fireplace poker-If regular poker, evidence it was used as a weapon used to attack and/or kill Dylan. Evidence it was used by Dylan as a weapon of some kind. Evidence it was used to move something associated with Dylan.
BTW-when I say fluids, I mean anything: blood, urine, coca cola, oil, mouthwash, whatever)
More ideas, anyone?