Opération Main morte (Levi Yoder t. 1)

The confined setting adds tension and focus to the story. I'm curious whether this was a conscious choice to heighten suspense or if it evolved during writing.

The story's momentum seemed to dip before picking up again. Was that intentional to build suspense or something else?

The timing of revelations kept me guessing, and I wonder if the structure was planned from the start or refined during drafting.