The quote emphasizes the importance of meticulous investigation in crime solving, suggesting that one must carefully dismantle the layers of complexity around a case. Each detail at the crime scene holds significance and offers clues that can lead to understanding the event. It highlights the detective's role in uncovering the truth by focusing on these subtle traces left behind.

By referring to these traces as "shadows of the event," the author conveys that every crime leaves behind evidence that can illuminate the circumstances surrounding it. This process of peeling away unnecessary distractions allows the investigator to reveal the core of the crime, demonstrating the delicate art of observation and analysis essential in solving mysteries.