Use the Scissors to cut the big curtain that is covering a box. Houdini is trapped inside and needs your help. Houdini could be the theft, as he is the master of escape and disguise to be Eric Wiesz.
How to Get the Scissors
Run to the right until you get to the luggage car. There’s a trunk on the floor with a black handprint on it. Click on the handprint to get another clue. There are coal smudges on the trunk. As soon as you find them, though, someone throws a pair of scissors at you! Pick up the scissors and put them in your backpack.