Moominsummer Madness (Swedish title Farlig midsommar, or "Dangerous Midsummer") is the fifth in the series of Tove Jansson's Moomins books, published in 1954. The major theme of the novel is theatre, described as an infuriating but ultimately rewarding process.The novel forms the basis of episodes 28–30 in the 1990 TV series. Part of the novel's plot has also served as inspiration for the 2024 video game Snufkin: Melody of Moominvalley. Source: Wikipedia (en)