Slender Engine

Slender Engine is the fourth episode of the first series.

Plot
Percy awoke one night to take the post train, but he saw that there was no one in sight. Percy began to find five notes, one by one. The first warned of a diesel with no face. As Percy read the second note, a diesel with no face suddenly rushed towards him and faded away. After Percy read the third note, the diesel appeared behind him and began to chase Percy. The fourth note was read, and the diesel appeared again. Percy found the final note as he pulled up to the level crossing at Ffarquhar. The strange note's author wrote that he wouldn't work alone again on the note. The diesel appears and disappears repeatedly until Dudley reveals himself to be the mysterious diesel. He said to Percy that the post is his train and he should leave it alone.

Characters

 * Dudley
 * Percy (does not speak)

Locations

 * Ffarquhar

Trivia

 * This is the only episode to date not to have a narrator.