This page is part of the IGN The Medium Wiki guide and details everything you need to know to solve the clock puzzle to enter Thomas’ secret room.
How to complete the grandfather clock puzzle
After a cutscene with Sadness, enter Thomas’ office where Marianne will instantly sense all kinds of emotions and feelings.
Investigate Thomas’ desk
As you enter the room, start examining the large clock on the right side of the room as Marianne can instantly tell that there was a lot more to this clock than it looks.
Note: As you search the desk, you will find the first letter of Notes from the Troubled Man. The letter appears to be a bit recent and details a schedule for their morning. Entitled “To-Do List,” picking up this letter will earn you an achievement.
After examining the clock, begin to examine the contents of the desk.When you pick up the flashlight that is in the draw on the floor, you will find a small key that is found just to fit the big clock.
How to Enter Thomas’ Secret Room (Clock Puzzle Solution)
Opening the clock door, Marianne will now have access to move the clock hands, which will change the layout of the room in the spirit world. To access Thomas’ secret room, move the hands of the clock to 4:00 a.m., as this will open a mind far above the desk – walk and absorb the energy and return to the clock.Now move the hands of the clock to 5:00 am, which will see the mysterious man opening the door to the secret room. To solve this puzzle, press and hold B / Circle to get an out of body experience. Go fast, control Marianne in the spirit world and go through the door. Inside you’ll find a power box on the wall. Standing near the box, press and hold RT / R2 to charge a Spirit Blast, then release it to power up the box. Returning to the material world, ask Marianne to inspect the cabinet which contains the photo of the first secretary. Using your Intuition, you will learn that there is a secret switch hidden behind the photo. While moving the photo away, press the button to open the secret door.