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“You're our very own legendary adventurer, Thomas!”

Mines of Mystery is the third and final double-length episode of the twenty-third series.


Thomas wants to impress his friends by finding an amazing discovery. It is not long before his wish is granted, although not in the way he had expected.





US and CAN

  • Joseph May as Thomas
  • Anna Francolini as Gina, the Children and the Passengers
  • Vincenzo Nicoli as Lorenzo, Beppe and a Worker
  • David Menkin as Jack
  • Tom Stourton as Alfie
  • Tim Whitnall as Oliver
  • Kerry Shale as Max
  • Rob Rackstraw as Monty
  • Teresa Gallagher as Brenda
  • Antonio Magro as Stefano



  • When Thomas was talking to the Sodor Construction Company, Gina was derailed.
  • When Lorenzo's fire is being stoked up, the cab interior shown is actually Gordon's.
  • When Jack says "I like the sound of this story!" while inside Stefano, only his face moves while his body remains stationary.
  • When Thomas was pulling Lorenzo and Beppe out of the Old Mines, Lorenzo was clean, but seconds later, he was dirty again.
  • When Thomas brakes in the old mine, the squealing sound effect plays before his wheels stop moving.
  • Montserrat Lombard is credited despite not voicing any characters in the episode.
  • In one scene, Alfie's conflat and Oliver's low-loader clip into each other.
  • When Thomas and Gina take the Pack to the dig site, Max and Monty keep switching places as they roll along the road.
  • Max has Monty's horn sound when Thomas almost runs into him.

In Other Languages

Language Title
Brazilian Portuguese Minas do Mistério!
Dutch De Mysterieuze Mijnen
Estonian Salapärased Kaevandused
Finnish Mysteerin Kaivokset
German Das geheimnisvolle Bergwerk
Italian Un Tesoro Ritrovato
Korean 광산의 수수께끼
Latin American Spanish Las Minas del Misterio
Latvian Noslēpumainās Raktuves
Lithuanian Paslaptys Anglies Kasykloje
Polish Tajemnicze Kopalnie
Russian Загадочная шахта
Spanish La Mina del Misterio

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