CCTV footage captures Cate and Aiden Gascoigne driving home seconds before their car plunges into a ravine and explodes.

When fire crews arrived, the vehicle is empty.

Cate and Aiden have vanished.

Missing persons investigator David Raker has solved too many impossible cases. He knows that behind every disappearance lies a dark tale waiting to be uncovered.

What he doesn't know is how dark this one is - or how close it will get to him.