Although the porter throws away the order list, the writing has made an impression in the pad. Pick it up and use your pencil to shade the empty page, and you will find that Tesla ordered the Prune Juice.
Because the porter won't tell you who ordered it, and throws away the order slip, use the pencil to shade her order pad, and you can see what she wrote. Nicola Tesla was the one who ordered prune juice.
In order to reveal the notebook passage on Mystery Train Island, find the pencil.
you give him prune juice and you find a luggage key.
The prune juice is in Tesla's room. Change into the clothes of the porter to get inside Tesla's room.
Head for the luggage car to examine Tesla's luggage. In the luggage car, you find coal stains on Tesla's luggage, and someone throws a pair of scissors at you!
Tesla will have a cup already with him. All you do is click on the pitcher on the dresser, then on the cup to refill it..
It is just outside Edison's cabin. You discover it after talking to Mark Twain, as the train makes a sudden unscheduled stop.
As you walk through the train you find a pencil. When the porter throws away the drink order, pick up her order pad and use the pencil to shade the blank page, to reveal any marks made on the next page. The orderer is revealed as Nikola Tesla.
When you get back on the train after the unscheduled stop, go to Edison's cabin. A magnifying glass will appear near your character and the stains will become part of your evidence.
You pose as the porter to enter his cabin. Tesla will have a cup already with him. All you do is click on the pitcher on the dresser, then on the cup to refill it.
It is in front of thomas edisons door on the floor
You find spilled prune juice in front of Thomas Edison's cabin. When you discover that Nicola Tesla was the one who ordered it, you have to check his cabin. In the luggage car, Mlle. Moreau suggests posing as the Porter to get to Tesla. Go to the Porter Closet and get the extra hat and coat that is there (you just need to wear the cap). Go right to Tesla's room. He will let you in and ask you to pour him some more prune juice from the pitcher on his dresser.