He solved the world's greatest problem.

Now he has to pay for it.

Dr Marcus Voss has achieved the impossible.

Hidden beneath the Utah desert, he has created The Perfect Fire - a revolutionary energy source capable of providing unlimited clean power to every home on Earth. No pollution. No waste. No fuel bills. A discovery that could end poverty, transform civilisation, and change history forever.

There is only one problem.

Marcus Voss is broke.

With his laboratory on the brink of closure and every government turning him away, salvation arrives in the form of a mysterious financier named David Garand. Garand offers everything Voss has ever needed: money, influence and the power to bring his invention to the world.

All Marcus has to do... is sign the contract.

As Project Prometheus gathers momentum, tiny clauses begin to take on terrifying significance, strange shadows appear where none should exist, and Voss slowly realises that some bargains cannot be measured by mathematics.

Because not every price is paid in money.

The Perfect Fate of η = 1 is a chilling mystery thriller and a standalone prequel to The Perfect Act.