It's not so long ago that a woman's expressed interest in other realms would have ruined her reputation, or even killed her. And yet spiritualism, in various incarnations, has influenced numerous men - including lauded modernist artists such as Wassily Kandinsky, Piet Mondrian, Kazimir Malevich and Paul Klee - without repercussion. The fact that so many radical women artists of their generation - and earlier - also drank deeply from the same spiritual well has for too long been sorely neglected.

In The Other Side, we explore the lives and work of a group of extraordinary women, from the twelfth-century mystic, composer and artist Hildegard of Bingen to the nineteenth-century English spiritualist Georgiana Houghton, whose paintings swirl like a cosmic Jackson Pollock; the early twentieth-century Swedish artist, Hilma af Klint, who painted with the help of her spirit guides and whose recent exhibition at New York's Guggenheim broke all attendance records; the 'Desert Transcendentalist', Agnes Pelton, who painted her visions beneath the vast skies of California; the Swiss healer, Emma Kunz, who used geometric drawings to treat her patients; and the British surrealist and occultist, Ithell Colquhoun, whose estate of more than 5,000 works recently entered the Tate gallery collection.