With professionals on site, the investigation picked up speed. Several detectives in gloves moved about the house, searching for clues.
Yuan Si had thought that once her colleagues arrived, she could leave. But seeing one colleague sweeping the floor with a small brush and another taking measurements with a ruler, everything seemed novel to a junior officer who had never been to a crime scene before.
"What are you doing?" Yuan Si curiously sidled up to the colleague with the brush and asked in a low voice.
The detective with the brush was quite good-natured and actually started to explain it to Yuan Si.
"Never seen this before, huh? I'm collecting fingerprints and footprints. The culprit doesn't always leave obvious prints, so in cases like this, we have to find a way to make the hidden clues reveal themselves…"
