Millie and the Volcano

Millie and the Volcano is an eighteenth season episode.

Characters

 * Thomas
 * Harvey
 * Samson
 * Millie
 * Sir Topham Hatt
 * Sir Robert Norramby
 * Dowager Hatt
 * Stephen (cameo)
 * Annie and Clarabel (cameo)

A groundsman also speaks. He is voiced by Keith Wickham in the UK narration.