Don't Go Back

"Steamies are fast, steamies are first!"

- Thomas

Don't Go Back is the fourteenth episode of the twelfth series.

Plot
One spring day, Thomas is to load and shunt trucks of stone at the quarry for Henry. However, Diesel states that he’s also got an important job and claims he is faster than Thomas - and declares that they race backwards (so it’s harder) to the hopper prove it, which Thomas accepts.

The two race and Thomas thinks that he’s first, but Diesel is actually first and Thomas accidentally bumps him under the hopper and gets himself covered in stone. When Diesel boasts that he has won, Thomas challenges him to another race to the wash down which he states that he will win. They soon race, but Thomas can’t see Mavis is at the wash down and accidentally bumps into her, causing her to derail. However, Thomas forgets about Mavis, instead focusing on having won, so Diesel offers a tie breaker to the engine sheds.

Thomas soon races ahead, but neither he nor Diesel can see that 'Arry and Bert are behind them and also cause them both to be derailed after colliding with them. When Henry arrives, Thomas confesses that none of the trucks have been loaded and gets in trouble with the Yard Manager for what he did. Although Diesel attempts to challenge Thomas to another race, Thomas instead arranges the train and collects Rocky to put Mavis, 'Arry and Bert back on the rails.

Thomas and Diesel then work together to clear away the mess from the races. When the two are done, Diesel challenges Thomas to another race, which Thomas orders to be forward. This time, both arrive at the quarry gates at the same time.

Characters

 * Thomas
 * Henry
 * Diesel
 * Mavis
 * 'Arry and Bert
 * Rocky
 * Troublesome Trucks

Locations

 * Sodor Slate Quarry
 * Knapford Yards

Trivia

 * Stock footage from eleventh series episode, Hector the Horrid! and The Great Discovery is used.
 * This episode marked the last of a few things:
 * The last episode written by Simon Spencer.
 * Henry, Diesel and Mavis' last appearances in the model series, as well as Mavis' only appearance in the twelfth series.
 * The music of the engines fighting each other in Calling All Engines! is reused when Thomas and Diesel are racing against each other.

Goofs

 * When Thomas and Diesel are at the quarry shed and the Manager is walking towards them, Thomas' face is differently angled from his smokebox.
 * A third rail is used to make Mavis derail and is clearly visible.
 * Diesel blows steam from his cab when he and Thomas shunt the trucks of rubble and wood.
 * 'Arry and Bert are missing the stubble on their CGI faces. Their faces are also considerably smaller than usual.
 * Diesel's wheels do not move as he reverses away from the hopper.
 * Right before Thomas and Diesel crash into 'Arry and Bert, one of the twins' eyes are wonky.
 * When Thomas tells Henry that his train will be ready, his CGI face is not proportioned correctly.
 * In the closeup of the trucks filled with rubble from the sheds, one of them is over Thomas' steam platform.
 * When Thomas puffs away from Henry in the overhead shot, he is missing his face.

Merchandise

 * Books - Don't Go Back

Home Media Releases
{{Scroll box|

UK

 * The Complete Series 12

US

 * High Speed Adventures
 * Jump into Spring

CAN/LATAM

 * High Speed Adventures

US DVD Boxsets

 * Adventure Pack

AUS

 * The Party Surprise
 * The Complete Series 12

DVD Boxsets

 * The Essential Collection

MYS

 * Tram Trouble and Other Adventures
 * Thomas Puts the Brakes On and Other Adventures

ZA

 * Percy and the Bandstand

FRA

 * A New Arrival

THA

 * Tram Trouble

KOR

 * Thomas the Little Engine and Friends Season 7 Vol. 3

TWN

 * Best Friend

HK
}}
 * Thomas and Friends Volume 44

A No Retroceder אל תסעו לאחור Jazda Tyłem Гонки назад