The case remains on file in the records of the City Police Investigation Division as a missing persons investigation, but the detectives who handled it never spoke about it again outside official protocol.
It happened on a winter night at José María Moreno Station on Line E of the Buenos Aires subway. Security cameras captured the exact moment when a man in his early thirties, visibly exhausted and carrying a black briefcase, stepped off the last train bound for Bolívar at 11:42 p.m.
The station's CCTV footage shows him walking toward the escalators leading to the Avenida Rivadavia exit. However, the motion sensors at that exit later confirmed that no one left the station that night.
The following day, after his wife reported him missing when he failed to return to their home in Caballito, police seized the complete recordings from the platform and the tunnel.
A forensic review of the footage uncovered a detail that left even the investigators shaken.
The man never left the station.
In the hours that followed, he can be seen wandering the deserted platform, stopping every few minutes in front of the white tiled walls. At 3:20 a.m., the cameras recorded something impossible: the man approached one of the concrete support columns, pressed his body against it, and slowly began to sink into the solid structure, as though the wall had become a thick liquid, until he disappeared completely.
Police forensic specialists arrived at the station with ultrasonic scanners and thermal imaging equipment to examine the column.
They discovered a hollow chamber that did not appear on the original 1944 construction plans. When workers drilled into the concrete with an industrial core drill, they found no biological remains. Instead, a powerful odor of dampness and ozone poured from the small cavity.
The only item recovered from inside, lying in decades of accumulated dust, was the passenger's black briefcase.
When prosecutors opened it, there were no documents, no clothing, nothing except the man's wallet, opened to the identification section...
...and an old paper subway ticket—one of the kind no longer in use—stamped with an impossible time:
4:15 a.m.
The following day.
