25 days, 25 chapters. This December, the countdown to Christmas will chill you to the bone.

Hoping to bring his family closer together, Adam Gray arranges a vacation in a remote cabin on a snowy mountain. Things take a dark turn, however, when someone starts leaving gifts in the Christmas stocking mounted on the barn door.

Each morning brings something new, and with every passing day, the contents become more terrifying. Soon, the family makes a spine-chilling realization: they've been dragged into a deranged game of Secret Santa, and if they want to survive, they will have to fight.

The countdown to Christmas has never been scarier than in this internationally bestselling holiday thriller from Per Jacobsen.

Per Jacobsen is a Danish author best known for writing thrillers with supernatural elements.

He got his literary debut in 2018 when he won a writing competition issued by Byens publishing house in Denmark. Shortly afterwards, he signed a contract with the publishing house Valeta, also in Denmark, who published his debut novel, The Mansion of Mirrors.

Per Jacobsen's next three books (books 1-3 in the Strung Trilogy) were translated and gave him his international breakthrough as they quickly went to the top of the bestseller list in several countries, including the US and England.

Today, Per Jacobsen is a full-time writer and lives permanently in southern Spain with his wife and two children.