|This article is about the Story Library book. You may be looking for the engine.|
Murdoch, re-titled Murdoch the Mighty Engine in 2011, is the forty-third book in the My Thomas Story Library series.
Murdoch arrives on Sodor to help pull freight on the mainline, but can hardly find peace and quiet. Murdoch soon makes friends with Salty and Harvey when noisy sheep stray onto the track and the two engines come to his rescue.
- This book is based on the seventh series episode, Peace and Quiet.
- Instead of Toby, Harvey and Salty come to help Murdoch when he stops due to the sheep. Also, Murdoch's fire goes out and he has no more steam.
- Salty is said to have steamed after Harvey says "No need to be rude".
- Murdoch's name is written in black on his nameplate, when it should be gold.