No earthquake could be this big or last this long. Yet still the sea slopes downwards! Now the sun is no longer high in the sky, because the horizon is rising up to meet it!

There's a five hundred mile hole where the north pole should be! The scientists' first guess must be wrong! We aren't falling - at least not yet, the gravity of the world itself is distorting the crust, pulling it in on itself! How will this end?

We are heading toward the centre of the Earth! Will we be crushed? Or burned to ashes by liquid rock? Or tossed in the air and smashed to pieces as the Earth bounces back to normal? Or do we sit and await the inevitable hurricane caused by the enormous changes in pressure?

Should we put the ship into reverse at maximum speed? Or keep steaming forwards and pray that the scientists are wrong? Or do something else?