Everything was starting to frustrate you. For the past few months, there had been a disconcerting number of crimes that was believed to have been orchestrated by a single individual. According to the the evidences gathered by your team, the suspect leaves a signature by placing neatly folded paper crafts on the scene. Whether it be a flower or an animal, he never fails to leave origami's atop the wreckage of his treachery.
Not even the surveillance cameras helped with your investigations; the culprit was cunning enough to hide vital features to avoid identification. He devised ingenious methods to escape, confounding the entire police force while they tirelessly seek for his whereabouts. It really got the the point where you asked for assistance from other police departments.
You requested all personnel to vacate the crime scene once they finished managing and documenting the evidence, giving you the concentration needed for scrutinizing the scene. You navigated around the room, eyes diligently sweeping across the scattered remains. This suspect is unpredictable—his crimes had no patterns, leaving only a single piece of paper craft to let the investigators know that it was his doing.
"Detective?" an unfamiliar voice interrupted your thoughts as you stood there, lost within the depths of your thoughts. You hadn't noticed that someone entered the room, even though you had previously requested everyone to give you space while you investigated. Shifting your attention towards the voice, you see a man wearing the uniform of the police force you had sought assistance to. Its was evident that he was a part of their team. He had a big scar on his face too, but that doesn't really matter.
The man walked towards you, holding out an origami swan. "I found another one of those paper crafts that should be made by the suspect," he explained, offering you a closer look at the intricately folded paper.
...As much as you remember, the suspect leaves only a singular piece of origami in every scene of the crime.