Starts around 24-25 min mark.
REVIEW AND SPOILERS BELOW:
I wont lie i was scared at first but after a while i wasn't as scared considering he doesn't actually do anything until you actually find all the bodies. he just whispers nice things in ya ear. I found the game to be charming however and even somewhat funny in a good way. If possible maybe make it to where there are actual repercussions to turning your back too long (and if you want I wouldn't be opposed to some comedic elements added if you wish to go that route).