Ruth is a law-abiding elder, working out her national service, but she has secrets.

Her tireless research into the disease that killed her young daughter had an unexpected outcome: the discovery of a vaccine against old age. Just one jab a year reverses your biological clock, guaranteeing a long, healthy life.

But Ruth’s cure was hijacked by her colleague, Erik Grundleger, who hungers for immortality, and the SuperJuve – a premium upgrade – was created, driving human lifespan to a new high.

The wealthy elite who take it are dubbed Supers, and the population begins to skyrocket.

Then, a perilous side-effect of the SuperJuve emerges, with catastrophic consequences, and as the planet is threatened, the population rebels, and laws are passed to restore order: life ends at 120. Supers are tracked down by Omnicide investigators like Mara … and executed…

Mara has her own reasons for hunting Supers, and she forms an unlikely alliance with Ruth to find Grundleger.

But Grundleger has been working on something even more radical and is one step ahead, with a deadly surprise in store for them both…