The narrow staircase twisted upwards. It seemed to go on forever. Catt and Segna kept holding hands. Segna led with her free hand outstretched, lighting the way. Catt followed, ready to catch Segna if she stumbled. The winding stair was just a little too narrow for them to walk side-by-side.

Suddenly the stair ended. There was thick multi-coloured fabric blocking the way.

They stopped. The muscles in Catt's legs burned from the climb. She could see that Segna was breathing hard.

They re...