After that I cannot pretend to have any idea of the direction we took.

I know that we passed through Drury Lane, crossed High Holborn, to presently find ourselves somewhere at the back of Gray's Inn.

The buildings of the Parcels' Post Depot marked another stage in our journey.

But still the other cab did not show any sign of coming to a standstill.

Leaving Mount Pleasant behind us, we entered that dingy labyrinth of streets lying on the other side of the Clerkenwell House of Detention.