Thomas the Tank Engine Wikia
This article is about the Story Library book. You may be looking for the characters or the episode.

Mighty Mac, re-titled Mighty Mac the Double Engine in 2011 and Mighty and Mac Work it Out in 2015, is the thirty-seventh book in the My Thomas Story Library series.


This is a story about Mighty Mac, an engine with two faces! Mighty and Mac argued all the time. But one day they realised that if they didn't listen to each other, they could get into serious trouble...




  • This book is based on the ninth series episode of the same name.
  • The prototype cover had Skarloey and Peter Sam on it.
  • In Read and Play, it has the same title as the 2006 version.
  • James, Annie & Clarabel are in the book, however they didn't appear in the actual episode.
  • This book marks Mr. Percival's first appearance in the My Thomas Story Library series.


  • Mighty Mac is depicted as a standard gauge engine.

In Other Languages

Language Title
Japanese マイティマック