After Thomas and Percy get spooked by a suspicious rumbling, the engines set off to figure out the secrets of the old mine inside Lookout Mountain.

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Main Cast: Aaron Barashi, Jessica Carroll, Henri Charles, Matt Coles, Neil Crone, Glee Dango, Holly Dixon, Bruce Dow, Tom Dussek

Directors: Campbell Bryer, Sean V. Jeffrey

Writers: Britt Allcroft, Rick Suvalle, Reverend W. Awdry

Editor:

Cinematographer:

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