At this moment, when he stated this conclusion in a calm and assertive tone, Director Lu, Director Hou, and Zhang Biao present did not immediately express dissent nor easily express agreement, but fell into a brief contemplation individually.
After a moment, Director Hou was the first to break the silence, saying: "Since that's the case, we'll retrieve the detailed footprint identification report later and study it carefully once more; this clue is extremely crucial and shouldn't be treated hastily."
Just as Director Hou finished speaking, Zhang Biao took action. He picked up his phone and quickly dialed the number for Technical Department: "Retrieve all footprint materials related to the double homicide case and send them to the interrogation room at once; we need to verify them on-site."
