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.

Top Cast

Aaron BarashiThomas

Jessica CarrollDarcy

Henri CharlesPercy

Matt ColesWhiff

Neil CroneGordon (US)

Glee DangoSandy (US)

Holly DixonSandy (UK)

Bruce DowSir Topham Hatt (US)