Threshold of No Return
Key art

Filed beside the screening
The picture is Threshold of No Return.
Scenario
2:57 · 16:9
The floor changes material along a single straight line: gray tile on the near side, pale stone beyond, no sign, no rope. Air on the near side is ordinary. Past the line it sounds thinner, and distant voices come through muffled, as if through cloth. People arrive with reasons they do not announce. A man with a folder stops at the line and checks a clock. The clock is ordinary and, for the moment, correct. A woman with a packed bag, already leaving something, watches the stone. The bag's strap is worn at the shoulder. She does not set the bag down.
She steps over. The moment her shoe meets the pale side, the light on her coat goes a degree colder, and the sound of her heel loses its echo. She walks on. She does not come back into the gray. Her second step is quieter than the first. Minutes collect. The man with the folder is still on the near side. His clock, when he looks again, has given up an hour he did not spend walking. The minute hand sits where an hour later sits, and his shoes have not moved. Another person joins him, then sits on a bench that faces the line, accumulating the wait in the set of the shoulders. The shoulders drop a fraction more and stay dropped.
The woman is a small shape at the far bend. She turns a corner and is gone out of this light. No one on the gray tile calls after her. The man puts the toe of his shoe on the stone and draws it back when the muffled air touches his sock. The pale stone where the toe touched dries a different shade and returns to pale, a brief mark that follows the test and does not become a crossing. The clock does not give the hour back.
He remains with the folder on the near side. The line holds, and the far corridor keeps its thinner sound where she disappeared. The bench keeps the person whose shoulders have settled into the wait. The packed bag is gone with the woman. Gray tile under the man's shoes stays gray, and the hour his clock lost stays lost while he does not spend it walking.
The muffled voices past the line continue without becoming words a person on the gray tile could answer. The bench holds the waiting shoulders. The folder stays in the man's hand, papers unopened, clock still wrong by the hour he did not spend. He does not put his toe on the pale stone again. The woman does not reappear at the far bend. Her colder coat and her quiet heel are gone with the corner she turned. No rope appears. No sign is hung to explain the change in the floor. Ordinary air stays on the near side of the line. Thinner sound stays on the far side. The straight line between gray tile and pale stone does not blur while the minutes keep collecting on the side that still has an echo.