Recently popularized in the Hollywood blockbuster - White Noise - practitioners of the Electronic Voice Phenomenon (EVP) claim to be able to pick up the voices of the dead using simple tape recorders. In the US we visit a mother who claims to have ongoing communication with her deceased son via EVP. Since his death twenty years ago, she has produced hundreds of clear EVP samples. She is convinced they originate from her son because she is able to recognize his voice and the audio contains specific phrases that only he used. Critics say EVP is just the pick up of stray broadcast signals. But we follow a former NASA scientist, and the world’s leading EVP researcher, into a laboratory that is totally shielded from all sound and electromagnetic signals. Despite it being a scientific impossibility he is able to produce an EVP sample in front of our cameras.