Just before the crash, Cate and Aiden Gascoigne are recorded on CCTV, laughing and happy. Then their car plunges into a ninety-foot ravine.

Within seconds, the vehicle is an inferno - and the Gascoignes are trapped inside.

But when fire crews arrive, they find something impossible:

The vehicle is empty.

Cate and Aiden have vanished.

And only missing persons investigator David Raker can solve the mystery . . .