Moominland Midwinter (Swedish title: Trollvinter) is the sixth in the series of Tove Jansson's Moomins books, published in 1957. This book sees Jansson adopt a darker, more introspective tone compared to the earlier books that is continued in the remainder of the series. Often in the book Moomintroll is either lonely, miserable, angry or scared - the result of being forced to survive in a world to which he feels he does not belong. While preserving the charm of the previous novels, the story involves a more in-depth exploration of Moomintroll's character than before. Source: Wikipedia (en)