Kitty Willoughby Marshall broke with convention. In 1901, she daringly divorced her husband and joined the WSPU, campaigning for women's suffrage. She married Arthur Marshall and the couple soon became a powerhouse team in the movement, Arthur defending the suffragettes in court while Kitty, trained in ju-jitsu and a member of the elite team 'the Bodyguard', helped her close friend Mrs Pankhurst evade the clutches of the authorities under the Cat and Mouse Act. All this took place under the watchful eye of the Metropolitan Police and Special Branch detective Ralph Kitchener, who frequently came into contact with the Marshalls in his work trailing suffragette 'mice'. This gripping new book by Dr Emelyne Godfrey follows events on both sides as the 'cats' hunted the 'mice', making extensive use of unpublished material and unseen images.