Dirty Water

Dirty Water is an upcoming episode.

Plot
While Kathy and Lizzie are cleaning Peter Sam, he tells them how well they clean engines on the Talyllyn Railway where he had recently returned from. Kathy takes it the wrong way, but Peter Sam explains to her what he means by telling the two of them of his incident with the water on the Talyllyn.

Characters

 * Peter Sam
 * Mr. Percival
 * Kathy
 * Lizzie
 * James (cameo)
 * Skarloey (cameo)
 * Troublesome Trucks (cameo)

UK and AUS

 * Steven Kynman as Peter Sam
 * Keith Wickham as Mr. Percival
 * Teresa Gallagher as Kathy and Lizzie

US and CAN

 * Steven Kynman as Peter Sam
 * Kerry Shale as Mr. Percival
 * Teresa Gallagher as Kathy and Lizzie

Trivia

 * Thomas does not appear in this episode.
 * This episode marked the first of two things:
 * Peter Sam's first episode as a main character since the sixteenth season episode, Don't Bother Victor!.
 * Kathy and Lizzie's first appearances on TV.

Goofs

 * Nigel Pilkington, Christopher Ragland and Rob Rackstraw are in the credits, dispite non of characters speaking.