Gyzyk was born in the village of Raczna, near Cracow. He claimed to be able to materialize spirits, produce ectoplasm and levitate objects. In 1923 he was exposed as a fraud in a series of séances in Sorbonne in Paris. Guzyk would use his elbows and legs to move objects around the room and touch the sitters. He was caught cheating by the psychical researcher Harry Price. According to Price the "man was clever, especially with his feet, which were almost as useful to him as his hands in producing phenomena."
Max Dessoir wrote the trick of Guzyk was to use his "foot for psychic touches and sounds". He was investigated many times and his mediumship was detected in fraud. At a séance in Cracow in December 1924 a photograph showed him moving a curtain with his hand. Walter Franklin Prince who attended séances with Guzyk came to the conclusion he had no paranormal ability.
- Jan Guzyk (1875-1928)
- Psychic Research. (1928). Volume 22. American Society for Psychical Research. p. 603
- Harry Price. (1942). Search for truth: My Life for Psychical Research. Collins p. 206
- Lewis Spence. (2003). Encyclopedia of Occultism & Parapsychology. Kessinger publishing. p. 399. ISBN 978-0766128156
- Richard Cavendish. (1971). Man, Myth & Magic: An Illustrated Encyclopedia of the Supernatural. Volume 6. Purnell. p. 2277
- Arthur Berger. (1988). Lives and Letters in American Parapsychology: A Biographical History, 1850-1987. McFarland & Company. p. 95