I don't know why. If Greg Lynn can kill two people, transport them elsewhere, conceal their bodies so well that the police had to be led to the area in order to find what was left of their remains, stay off the police radar for months, I don't know why PS couldn't have done similar with one victim.
imo
This is a 22 year old kid
Who has been meticulous in his approach, nothing has been found ( but her phone later on)
The police still can not find Samantha
If the accused still had Samantha with him, the smart thing would be to disable the phone and dispose of it with her body at the same time. Stopping and chucking it into a random dam only increases the chances of getting caught.
But why throw the phone at all? If he is on the way to disposing of the body, why risk a stop and not just dispose of the phone with the body? If he is on the way back, and presumably just realised he still had the phone, why choose that location when he could easily destroy and hide the phone in a bin, mine shaft back in town or completely destroy it ?
As I said before, we don't know how long the phone has been in the dam and If the police can link the accused's phone to that dam as well.
Whoever put the phone in the dam clearly wanted to dispose of the whole contents of the folder
Did Samantha really take the phone with her on the run? Or just her watch?
On a Sunday morning, there would be regular walkers along all those trails. Hiding a body takes some time and effort. If she was not immediately removed from the area where the alleged incident took place, then a passer-by would almost certainly have seen something. And it would have been far too risky to hide her in a temporary location and return to the scene of the crime later the same day, as there were likely still searchers in the area, people were heightened awareness that a woman was missing in the Mt Clear Forest.
The other factor is that there is no direct evidence that we know of linking drug use or abuse to Samantha's disappearance, and my thoughts are, it is unlikely that a drug-crazed offender could and would have successfully concealed the body in such a short time without detection.
To be able to carry out such an organised crime without detection, including hiding a body from numerous searchers and police, suggests that if he is in fact guilty, then he was more than likely coherent at the time and not severely drug-affected.
There is a lot to this 'that doesn't sit well with me'
Things can change, too, as more evidence is collected.