The British artist Marlow Moss (1889-1958) is one of the few early female Constructivists who inspired the great modernist masters. For instance, the so-called double line was one of her most important inventions, which she began employing in her paintings in 1930. It is one of the elements that both Piet Mondrian and Jean Gorin picked up on for their own neo-sculptural compositions. Even though they do not openly refer to her, their works are still closely related to Moss and they share her original, new ideas about art and composition. Unlike her contemporaries, Moss did not limit herself to painting. She applied her linear structures and mathematical principles to reliefs and sculptures as well. These aspects of her work, along with her unusual life, are discussed in detail in this exhibition catalogue.