Thomas discovers mysteries of the past and must help a new friend, save a ruined castle and may even find some treasure when Sir Robert Norramby comes to the Island of Sodor.
Narrator (voice)
Thomas / Percy / Diesel (voice)
Victor (voice)
Connor (voice)
Emily / Belle / Annie and Clarabel (voice)
Stephen (voice)
Sir Robert Norramby (voice)
Edward / Toby (voice)
Hiro (voice)
Emily (voice)
Paxton / Jack (voice)
Luke (voice)
Caitlin (voice)
Millie (voice)
Henry / Gordon / James / Diesel / Sir Topham Hatt (voice)
Thomas / Toby / Rheneas / Troublesome Trucks (voice)
Edward / Henry / Gordon / Skarloey / The Fat Controller (voice)
Spencer / Cranky / Kevin (voice)
Spencer / Cranky (voice)
Jack (voice) (uncredited)
Director
Writer
Editor
Original Music Composer
