Hide and Seek by Søren Sveistrup

From the internationally bestselling author of blockbuster thriller The Chestnut Man comes a spine-tingling new thriller

Count to one, count to two...
A strange voice from inside the woods, repeating a child's counting rhyme.
Count to four, count to five...
A body discovered in the water.
You're trying to go home. Will you make it alive?
Thirty years later, a woman is haunted by a string of anonymous text messages, repeating that same counting rhyme. Counting down.
Found you.
Detectives Naia Thulin and Mark Hess are charged with finding the missing woman. But when they uncover links to a decades-old cold case, their investigation takes a terrifying turn.
A twisted killer is on the loose. Can they catch them, before they strike again?