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Mines of Mystery is a double-lenght special episode of the twenty-third series.


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





  • 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


  • Jack mentions the events of the first series episode, Down the Mine.
  • A brief instrumental of The Work Song is heard when Thomas and Gina travel to the dig site with the Sodor Construction Company.
  • The fantasy sequence is a parody of Indiana Jones and the Raiders of the Lost Ark.
  • This episode marks Alfie's first appearance since the twentieth series episode, Mucking About and his first appearance voiced by Tom Stourton, who took over from Nathan Clarke.
  • This is the first episode where other Sudrian vehicles join Thomas in an international location. Wish You Were Here is the first instance, but only in a fantasy sequence.

In Other Languages

Language Title
Spanish Las Minas del Misterio

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