Colin Wilson described a moment of gleaming realism in his 1956 book “The Outsider” by referring to WB Yeats’ poem “Vacillation”. He also posited the idea that if outsiders couldn’t find an outlet for their creativity, the results could be sinister. Sutcliffe’s “Vacillation” marries these two strands by collaging a reading of the poem with a morphed montage of murder scenes.