In the bitter winds of autumn 1963, Tove Jansson, helped by Brunström, a maverick fisherman, raced to build a cabin on a treeless skerry in the Gulf of Finland. The island was Klovharun, and for thirty summers Tove and her beloved partner, the graphic artist, Tuulikki Pietilä, retreated there to live, paint and write, energised by the shifting seascapes and the island's austere rocky charms.