[Bonaparte]

"How do they know this [that he didn't know his way around house]?"

Since he had to go off clean pathways to enter by the window, his shoes were probably dirty and left a tale of meanderings on the carpet/floors. It's a large, irregularly shaped house with 8 people living in it. Even if he'd been in there before, possibly as one of the workman doing the remodeling, he might still get lost, especially in the dark.

[Phantom Lord]

8 people living in the house is another thing that bothers me about him 'not knowing his way around the house'. With no knowledge of the house, how did he manage to make it directly to her room without wandering into any of the other bedrooms? It demonstrates he had a minimum knowledge of the homes layout. If he has enough knowledge to make it to her room on the first try, then he should have been able to make it out rather easily.

I am not saying it didnt happen exactly as being reported. But the high amount of cases recently of girls going missing at the hands of internet chatters, by choice or not, is a possibility that clealry needs to be examined.