Sheila Dunn

While observing the mysterious Inferno project, the Doctor tries a dangerous experiment of his own. He finds himself flung into an alternative Earth, where men are turning into monsters.

The Doctor begins to suspect that penetrating the earth's crust will create more Primords but Stahlman sabotages the computer to stop him proving it.

The Earth's crust has been penetrated and, while the Doctor and Greg try to contain the disaster, the Doctor begins to realise the planet has passed the point of no return.

The Doctor attempts to convince the alternate Inferno staff that penetrating the earth's crust will cause a disaster but instead is imprisoned with an infected Bromley.

The Doctor finds himself in a parallel universe where Britain is a dictatorship and the Inferno Project is a slave labour camp policed by his friends' counterparts.