Perhaps re-check the filing cabinet back at the house, make sure that you read all possible documents in all accessible drawers.
Also be sure that you did this:
Under C, read the Condolence Card. Click the card to open and it and see the signature from the Neurobiology department.
Take the phone list from inventory and use it on the open condolence card.
See another frame; click the names on the list at left when found a corresponding signature on the card.
See that the only one left is Styles and Abram Linkweller. Linkweller must be the enemy.
