Five people living on Dublin's streets have gone missing and criminologist David Dunnigan has been tasked with finding them.
His search leads him to ten-year-old Harry, living alone in an abandoned warehouse, who has been waiting days for his parents' return ...
Dunnigan knows more than he would wish to about unexplained disappearances. Almost twenty years ago, his young niece Beth vanished during their annual Christmas shopping trip. No trace of her was ever discovered. And the tragic mystery has loomed over Dunnigan's life ever since.
As his current investigation draws him deeper into the city's dark underbelly, Dunnigan's resolve to help Harry and unravel this mystery grows stronger.
And could it lead him one step closer to finding out what became of Beth?