Another for the Drabble Dabble Challenge, and a bit of a preview for a fic I've been thinking about writing.

Disclaimer: Don't own it. Y'all know the routine by now, right?

Saturday night, near midnight: still at work and alone.

Or was he?

Every so often he caught just a fleeting glimpse of a familiar form, a familiar face. The first time it had startled him, and then terrified him; not the presence itself but the fear he was losing his mind. Eventually, after repeated sightings, he had simply grown used to it. Now he found it almost comforting, in a way. As time went on he had accepted the inevitable. One day, he too would be a shadow inhabitant of this building.

Once an NCIS agent, always an NCIS agent.