San Francisco Book Festival 2014 Winner: Best Young Adult Fiction.
Spanners
The average human being lives from 0-80 sequentially. Spanners don't.
These rare beings have different lifespans than the rest of us. Some live their lives in reverse, some live only six months, and
some are immortal. There are hundreds of classes of spanners that live
hundreds of different ways, and each class has a unique lifespan that
gives them unique powers.
A few spanners find a way to live in normal human society, but most
live in the shadows. There are some spanners that are extremely
dangerous, and with the help of a mayfly-class spanner, an 8,000-year-old detective named Adam Parr is doing everything he can to keep them under control.
The Fountain of Youth
When one of Adam's old adversaries uncovers the most powerful and
deadly spanner in history, it's up to Adam and Mayfly to take her back
before she unleashes her full power and ends the world as we know it.