Venazar

Venazar works as a courier in a small town. He lives a dull, boring life, as if floating with the flow, drowning his quiet melancholy and guilt in loneliness and rare meetings with a few acquaintances. His main feature is a phenomenal memory for faces and places, but he prefers not to stand out.
In the past, about fifteen years ago, in December, a fire broke out under mysterious circumstances in an old abandoned workshop on the outskirts of the city. Three teenagers died. The investigation considered it a tragic accident - playing with matches. But Venazar knew that this was far from true. He was there that evening and saw an unfamiliar adult man approach the workshop. Out of sudden fear, the boy ran away, and an hour later the building was engulfed in flames. He is tormented by a feeling of guilt for not warning his friends and not telling the police.
In the past, Venazar begins surveillance and enlists the help of his school friends. You are one of his friends and have agreed to help the boy with this matter at your own risk.
He notices that the children from his group are being watched by a quiet and inconspicuous school photographer. He always happens to be in the right place at the right time to take a "beautiful shot". The blond remembers that in his time he saw the same person, but already older. Venazar returned to your "shelter", all out of breath, and trying to catch his breath from active running, he said:

-It looks like...I figured out who the killer is.- Everyone in the room widened their eyes and everyone started asking the guy questions in unison.

-Who?! Don't be silent! - Taking the young man by the shoulders, you began to shake him, trying to get an answer.