Because they had already stuck their collective heads in the noose. The DA had jumped onto a high profile case to benefit his re-election. The LE's got a tip (Brenda) and it looked like it could pan out. They thought some of his behavior/activity was suspicious, and that there was some possible evidence. SO, they jumped in totally. They were under pressure to find someone and quick, so they did. Then they were under pressure to make sure it stuck, no matter what. They couldn't back out, even if they wanted to.
Something that would fit the evidence more closely would be this:
Damon and boys playing video games, Danielle writing.
Bedtime, all kids to bath,bed.
Damon goes up and Danielle has taken her clothes off, and put on her PJ's and is in bed,didn't take a bath. (you guess why)
Damon makes her get out of bed, take off her PJ's and march to the bathroom. She gets in tub and takes a bath.
NOW, there are 2 versions from this point on. One involves Damon reading something in Danielle's diary that makes him mad. The other is that he goes into the bathroom while Danielle is taking a bath, because he does this often, which is why Danielle didn't want to take a bath.
Regardless, Danielle is knocked down while in the tub, falls and maybe her teeth are knocked out. She hits her head hard enough to cause a fatal concussion, or Damon simply drowns her.
He wraps her up in a red sweater that is laying in the bathroom (Brenda's) and possibly an orange towel.
He takes her out to the van, and finds a place to dump her body.
This explains why she was naked, why the fibers. I know, another FAR OUT explanation. Since the VD's seem to be hiding something, and especially Damon has never acted like parents that lost their child (except when convenient) I find reason to try and come up with different scenarios that FIT the PUZZLE that this case has been.
Out of all the CRAZY FAR OUT scenarios that I have come up with, most of them make MORE SENSE than the current one proposed by the POLICE against DW.
And for those that keep asking "what about the blood on his jacket" , I already had a scenario for how that could have occurred. I believe I posted on yesterday's thread.
Funny again, how the police do not do any testing on anything that doesn't support DW as the perp. We heard about the BLUE PAINT, and it would appear there are several places this could have come from that would provide a lead, but as far as we know, the police DON'T WANT THAT LEAD. Why can I say this? Well, if the blue paint didn't mean anything, then I believe they would have said, "We checked that out, but it didn't lead anywhere." By the paint being evidence on the body, and not a word about by the Prosecution, it must mean they didn't attempt to do any analysis of it at all.
WHY should they. They have already convicted DW in their minds.
This is why I think that the shell casing is of major importance.
The shell casing showed up on the second day of the search of Danielle's room. At this point, LE was probably still looking at DVD/BVD as suspects.
I believe Damon placed the shell casing there, said "we don't own a gun", and BVD told LE to look at DW.
If the VD's don't own a gun, then the perp (that dropped the shell casing) MUST have come from outside the home.
It would definitely shift attention to an armed intruder entering the home, as opposed to parental involvement.