Narrow Gauge Spills and Chills will be uploaded in July or August 2017 and will be the third book in Thomas1Edward2Henry3's Railway Series. It is an RWS style adaptation of three fifth season and one sixth season episodes with the Skarloey Railway engines.
- Duncan Gets Spooked
- Dunkin Duncan
- Rusty and the Boulder
- From this book onwards, all stories will be RWS style adaptations of post Season 4 episodes, as The Engines of Sodor has resumed for original stories.
- It is possible that the four stories will be narrated by a guest narrator.