The Circle Trilogy, written by Ted Dekker, is a gripping series of suspense novels set in a dystopian future. The story follows Thomas Hunter, a man who discovers he can travel between two parallel worlds. In one world, known as the Circle, surveillance is omnipresent, and the government controls every aspect of people's lives. As Thomas fights against the oppressive regime, he uncovers a conspiracy that threatens both worlds. The Circle Trilogy explores themes of surveillance, identity, and the power of choice.