Girlypop

Three big men, fully armed parked their car right behind Mason's Mercedes as one of them asked " Where do you think he went?"

He did not get an answer because the other two have no idea either. 

This is when they noticed the traces of Mason's shoes on the snow that was all over the ground.

They decided to follow it even though they were not hundred percent sure that these traces actually belong to Mason.

Well, Mason got lost at first before finding the house, which is why they also kept roaming around the woods for twenty minutes before catching a glimpse of the hunted-looking house.

" There. It's open. The door is open. Maybe he is inside. That will be easier than we thought." Said one of the men who noticed how the traces stops right in front of the abandoned house and also the door was open.

Strange, the system closed the door after Mason, but now it's opened.