Gnomon

In a near-future Britain, a surveillance-democracy called The System knows everything, and can even spy on your mind. When state investigators look into the head of a refusenik novelist named Diana Hunter, she shockingly dies - an unheard of result in a perfect system. Who was Diana Hunter, and could she have been correct to attempt to withstand a perfect, democratic system? For fans of Haruki Murakami and David Mitchell.