Forest Dweller
You decide to search the first floor. There's nothing much of interest, and you decide that because the killer is not here, they are either waiting outside or somewhere else in the house. There is, however, a computer in a vacant room. On the screen reads 'Enter password.' You could search the rest of the house for any hints on the password, or if you think you've got it, you could give it a go. There might be consequences for getting it wrong, however.