Where is the last writing on wall in game The Song of Dreams from house Anubis?

The last writing on the wall in "The Song of Dreams" from House Anubis is located in the secret room behind the painting of the two monks.

This secret room is accessed by pressing a specific combination of buttons in the hallway outside. The writing on the wall inside the room reveals a secret about the past, the monks, and the mysterious object known as the "Dreamcatcher".

If you're curious about the exact message or its significance, I recommend watching the episode of "The Song of Dreams" where this secret room is revealed.