[Please don't read further until you have successfully completed this chapter.]
dropping things in the passageway?entering other compartments (they're all different!)photographing things at the train platform?photographing the bad spy? yourself? the camera?pulling the stop cord on the train?jumping out the window in your compartment?giving the document (or shreds) to the bad spy?reading the graffiti in the bathroom?putting things in the sink?flushing things down the toilet?trying to hide the document every place you can think of?taking a gun from one of the guards?