The Snowman is based on the best-selling novel of the same name published by Norwegian writer Jo Nesbo in 2007. This book is his seventh novel with Oslo detective Harry Hole as the protagonist. The story mainly tells that when Harry was investigating the disappearance of a young mother, he found a mysterious snowman in the victim's yard, and it was wearing a pink scarf that the child gave to his mother as a Christmas gift. As a result, Harry dug up a series of old cases with the same situation, and a serial killer who always committed crimes when the first snow fell surfaced... The Snowman will be co-produced by Universal and Working Title. If the film is well received, Jo Nesbo's other six detective Harry novels will also have the opportunity to appear on the big screen.