"When we went to see Klaus, did I do anything that made you suspicious of me?" Decius asked.
"No. Strictly speaking, it wasn't you. Do you remember what I did before we walked into the house?" Zhang Heng asked.
"You were looking around, looking at the people in the corridor... Oh, you saw Andrea's man," Decius said.
"I don't know who those people are, and I'm not even sure what their purpose is. But my southeast city friends told me that those guys have been following us for some time, and the murderer killed Amidio a few minutes before we arrived. In other words, someone realized that we were about to uncover the truth. So, they hurriedly killed Amidio to prevent him from talking to us. Here comes another problem."
"Even if they were following us, how did they know our movements so well?" asked Zhang Heng in return.