In Nancy Drew: Message in a Haunted Mansion, you can spy through the painting hole from behind the fireplace in the secret room. Get there before Louis does (before noon) to spy on him.
To open his briefcase, you’ll need to know the combination lock for the left and right sides. The combination is in his passwords app on his laptop: 4653-4868.
There is a 30-second real-world timer for when Louis comes back. If you start by reading the book about Gum Bo Fu, the timer stops and you’ll be able to view the newspaper clipping of your past case, the magazine article that is circled, Louis’s business card, and a letter of appraisal.
