“The Night Hunter is back. He’s going to kill us all.”

At the ruins of an old church, a group of ghost walkers encounter an unstable stranger, and All Hallows’ Eve ends in brutal death.

In a large, isolated house not far from there, a woman has spent years coping with a childhood trauma by painting ominous pictures. But recently, she has begun to glimpse a figure out on the moor, one that resembles the masked shape that appears again and again in her paintings. The one she calls The Night Hunter.

Soon afterward, Leo Asker learns that an antique iron mask, missing since a robbery and murder in the 1990s, has unexpectedly been found among the possessions of a deceased person. What does this discovery mean for the unsolved case? How are the three events connected? And can the Department of Lost Souls uncover the truth when nothing is as it seems?

Meanwhile, Martin Hill struggles to free himself from Prepper Per’s grip and to uncover his plans for revenge. What awaits him, and Leo?

The Night Hunter is the fourth installment in the bestselling Leo Asker Series.