25 Nights – Coming Christmas 2026

25 Nights is the highly anticipated sequel to 25 Days, the bestselling advent horror/thriller by Per Jacobsen.

Following the huge international success of 25 Days—which became a viral Christmas read, topped Amazon charts, and was acquired by Simon & Schuster—Per returns to the advent format with a brand-new story designed to be read one chapter per night in December.

The Surprise Book Box and the ebook are now available for preorder.

The standalone print editions (paperback and hardcover) — without the box — as well as the audiobook, will be available on the release date: November 1, 2026.

Book description:

Your survived 25 Days. Now brace yourself for the nights.

Last December, readers followed an innocent family as they became pawns in a horrifying game of Secret Santa in Per Jacobsen’s international bestseller 25 Days.

This time around, the story dives deep into the mind of the villain; the man in the ski mask.

And what’s in there will not only offer a new perspective on the events of the first book—it may just change your view of him.

Once again, the rules of the game are simple:
25 Nights. 25 chapters. One for each day in December as you count down to Christmas.