Caution: Runaway Engine!

Caution: Runaway Engine! will be the eighteenth episode of the seventeenth season of Thomas and Friends.

Characters

 * Thomas
 * Flynn
 * Skarloey
 * Peter Sam
 * Rusty
 * Owen
 * The Thin Controller
 * Miss Marvel
 * Rheneas (cameo)
 * Sir Handel (cameo)
 * Merrick (cameo)