What is the national border? Can we speak of the border ontologically? What remains of the border if we take away all the border ‘props’: the checkpoints, the guard-posts, the walls, the barbed wires, or the demarcation pyramids … what if we even take away the ‘territory’, the ground as such, and we look at a border that is drawn on water? How can one speak about the liquid border, and how can we represent it? How does this entity manifest itself? The chapter uses the notion of performance to speak of the radical contingency of the border. The concept of the ghost also problematizes time, identity, and presence. Finally, through the concept of the secret it examines the workings of power.