Personally (on the limited reporting we've heard) I'm not sure I can attribute much weight to any of the witnesses timings for the screams. But I am more interested in the man seen by Sam Alford. If he isn't PW who the hell is he? If his appearance is nothing like PW I fear everyone in Hull has cause to be very worried.
If he was not PW, given this sighting was directly after the screams, does this not strongly suggest this man is responsible for poor Libby's death?
But if this is so do we not encounter a similarly tight time window to the 7.5 minutes available to PR only a few minutes earlier? After all, if PW is to be believed neither he nor Libby entered the park by the time he left at 12.19 am. So, in the maybe 10 minutes between 12.19 and the sighting of this man leaving the park is it conceivable Libby could have left Oak Road, somehow been attacked by him, gone through the park and been put in the river, and the man have time to cover the ground back from the river to Oak Road?
Alternatively of course PW is lying and he left Libby in the park, which would then provide a greater window for the random stranger to attack her, put her in the water etc. and make his way back to Oak Road. But if he has felt the need to lie why? What is he trying to hide?
Finally, I submit PW can hardly expect the jury to determine that telling them he didn't enter the park was a lie, and then apply this to his advantage by determining this then allows for the possibility of a random stranger to be responsible for Libby's death.
Anyone have any thoughts?