Clementina slipped through, and in darkness she took a step forward and bruised herself against the wheels of a carriage.

Wogan closed the door and ran to her side.
"This way," said he, and held out his hand.

He guided Clementina round the carriage to a steep narrow stairway--it was more a ladder than a stair--fixed against the inner wall.

At the top of this stairway shone a horizontal line of yellow light.

Wogan led the Princess up the stairs.
The line of light shone out beneath a door.