The Quantum Thief is a science fiction novel written by Hannu Rajaniemi. Set in a future where quantum technology has revolutionized society, the story follows a master thief named Jean le Flambeur who is released from prison to carry out a seemingly impossible heist. As he navigates a complex web of virtual realities and mind-transfer technology, Jean's past and present collide in unexpected ways. The Quantum Thief is a mind-bending and intricately plotted novel that will keep readers guessing until the very end.