Passengers and Polish is the thirteenth episode ever made in Season 4.
Nancy, the conductor's daughter, had just finished polishing Skarloey. Duncan wants a polish too, but Nancy does not have time and Duncan is furious. He later has to put one of Skarloey's coaches back on the rails and take the passengers home, making him crosser still. At last, he loses patience and stalls on the viaduct. Skarloey comes to pull him home and the Fat Controller reprimands him, but Duncan refuses to pay attention.
- In the close-up of Duncan complaining about not being polished at the beginning, his face moves.
- In Skarloey's flashback, Rheneas has Sir Handel's whistle sound and Skarloey has Duncan's whistle sound