They fingerprint analysed the shutters and inside windows, the thepry the pj were believed to be told was they entered from the outside of window, why leave one window, in pj files it states it was too dark, but no mention of ever coming back, sectioning it off and analysing the outside. Am npt saying thats how it 100 percent happened but its a p*** poor forensic team to not analyse it given the statements.
The abductor didn't enter through the window though.
He must have crept in through the back, because the window wasn't open during Gerry's check.
When he entered the apartment he noticed the bedroom door was further open than he'd previously left it.
https://youtu.be/OZ8jmdWlB8Y?t=745So, the abductor was already inside the apartment, hiding somewhere.
Unless, maybe, Gerry just didn't notice the window was open when really it was, or perhaps the abductor
did come in through the window but then closed it behind himself. Or perhaps the window was open the whole time of Gerry's check, but the wind restrained itself from blowing the curtains open & slamming any doors until Kate went in.