5/5 Writer Philip Ball meets the physicists who are making real-life invisibility cloaks.
4/5 Philip Ball examines the invention of the microscope and the world of the invisibly small.
3/5 Philip Ball reveals that technology can act as a catalyst for belief in spirits or ghosts.
2/5 Philip Ball examines the curious relationship between science, stage magic and cinema.
1/5 Philip Ball examines the occult influences on Isaac Newton's work on invisible forces.