It all begins with a hot air balloon trip and three bottles of champagne. Centenarian Allan Karlsson and Julius are ready for some spectacular views, but they're not expecting to land in the sea and be rescued by a North Korean ship, and they could never have imagined that the captain of the ship would be harbouring a suitcase full of contraband uranium, on a nuclear weapons mission for Kim Jong-un. Soon Allan and Julius are at the centre of a complex diplomatic crisis involving world figures from the Swedish foreign minister to Angela Merkel and President Trump. Things are about to get very complicated.

"Published in 2018 by 4th Estate, an imprint of HarperCollins UK" -- verso. Sequel to: Hundred-year-old man who climbed out of the window and disappeared.