Continuity mistake: In the scene where Percy is talking to Stephen, Thomas reverses down the track he has arrived on and stops. But when Percy leaves, Thomas has mysteriously disappeared. Also, the track Thomas was on ends at some buffers behind him and leads to the turntable in front of him, but that was set to Percy's line.Paul Thomas Backes
Plot hole: Emily begins to pull Henry out of the shed, but however there is no track leading to the other end. Also, the turntable is not big enough for both engines to fit on.