Tom and Bob who felt relaxed were suddenly surprised by Drex's statement that all the staff on the 4th floor were not human.

"They're all vampires!" replied Drex grinning.

“Don't play us, Drex! You shook your head just now!” protested Bob.

“That's what I did to keep you calm! If I nodded every time I saw a staff passing by do you think you could talk that calmly with a Stuard Knight?”

"Gosh! You're right! Maybe I'll just walk out!” answered Tom.

"So Stuard Knights are also vampires?" Bob asked.

“Yes, he is the worst! That man sucked human blood! Unlike the staff who are still safe!” Drex explained.

"How...