This guide explain how to identify the right guy who has keycard.
How to Identify Guy with Keycard
What we need
Important, the right guy doesn't have a pager.
So how we can know who it is?
We need 2 things:
It can be found in one of the four rooms around the mansion.
This is always near one of the doors of cam guy.
What to do
Just look at the PC, and looking for the name, than kill the guy with the specific mask.
I know the guy i look for is raul.
And he has the wolf like mask, so i need to kill the guy who has this mask.
Here's the keycard.