Two disappearances. Two families. One secret. The past and present collide as missing persons investigator David Raker returns to crack a cold case wide open.

A father and his son are queuing for the ghost house at the country's newest theme park. CCTV cameras record them entering - but they never exit. No one can explain how they vanished.

When she was five, Rebekah Murphy's mother suddenly walked out and never came back. Now, Rebekah asks missing persons investigator David Raker to find out what happened.

The two disappearances - decades apart - seem unrelated. But as Raker digs deeper, he unravels an elaborate history of lies binding the cases together. Worse, there's someone determined to make sure the truth never comes out . . .