I began to tremble with excitement. Beside me I could hear Berry breathing fast through his nose.

Half a dozen times we lost the light, only to pick it up again a moment later. Each time it was brighter than before. We were gaining rapidly….

We could not have been more than a furlong behind, when the sudden appearance of a cluster of bright pin-pricks immediately ahead showed that we were approaching Marmande.

Instantly Ping's tail-light began to grow bigger. Jonah was slowing up for the town. In a moment we should be in a position to pass….

In silence Berry and I clasped one another. Somewhere between us Nobby began to pant.

As we entered Marmande, there were not thirty paces between the two cars. And my unsuspecting cousin was going dead slow. A twitch of the wheel, and we should leave him standing….

Then, without any warning, Adèle slowed up and fell in behind Ping.

I could have screamed to her to go by.

Deliberately she was throwing away the chance of a lifetime.

Desperately I laid my hand on her arm.