Don and Gilda enter Isabella's secret room with the toys of other kids. They also talk about William Minerva based on a secret code such as the Promised Neverland. It shows pictures of the other kids that were shipped out.
William Minerva had inserted Morse code into his book that spells the dangers of the orphanage. Since it's only a book and not the actual person himself, it's unclear whether he is still alive or now.
In William's book must be some sort of clue of the demon's chief true name, and something about a promise. It's highly probable that these facts will be crucial to the escape plan.
Don and Gilda manage to break into the hidden room. There, they see that all of the precious belongings of their siblings that left the orphanage were there. They start to ponder why all their belongings were in the room and start questioning whether the trio had actually told them the real truth.
Don and Gilda hear Mama's footsteps and are starts panicking.
In this chapter we have the following Research Elements: