They Walk Among Us highlights the phenomenon of materialisation mediumship, describing how experiments can induce the 'spirits' of deceased relatives to manifest in solid forms in a seance setting. This is an essential read for people who are willing to cast aside traditional, religious and orthodox notions of the afterlife and spirit world. Seeminly everything 'supernatural' can now be rationally explained in physics, facilitating new and, as some claim, conclusive evidence of survival after death.