"A Knowable World" follows Sarah Wardle's detainment in a Central London psychiatric hospital for over a year for manic episodes of bipolar disorder. The poems chart the stresses of thirty-something city life through police arrests and hospitalisation under section orders to achieve a way out; then the threat and frustration involved in the fight for liberty and the patience needed to achieve recovery. Through commanding and apt expression, Sarah Wardle conveys bleak experience. These cathartic poems are themselves testimony to her ability to overcome the sense of futility, helplessness and panic involved in bipolar disorder. Form and technique have provided a framework for her to re-establish a sense of order and concentration out of chaos. "A Knowable World" bravely enlightens our understanding of mental illness.