The dark shadow moved closer to the sleeping Veronica. She was soundly asleep. That's why she heard nothing. The shadow moved away realizing she wouldn't wake up anytime soon.
Something went under her pillow and fumbled for a while until it touched something hard. After getting what it wanted, the dark shadow left the room.
Arthur went back to his study and opened the diary of Sister Ruth. In front of Veronica, he couldn't check some things. He wanted to test something. He didn't want to do it in front of Veronica.
He sat on the chair and lit up the candle. Then, he put an open page of the diary in front of the light.
Slowly, a dark mark started to become visible.
The corner of his lips rose. 'I knew it,' he thought.
Some parts of the diary were written in invisible ink. That's why he had to use light and high temperature to make it visible. Fire could give both light and the temperature he wanted.
Now, he could read everything in detail.