Mike's Whistle

Mike's Whistle is an upcoming episode from the twentieth season.

Plot
Duck's whistle is making a funny noise, causing the other engines to laugh.

Characters
Rex and Bert are likely to appear.
 * Duck
 * Mike

Trivia

 * This is the first episode to be based on a story from The Railway Series since Mind that Bike.
 * This episode is based on the story of the same name from the Railway Series book, Small Railway Engines.