A short documentary based on SPR Council member Dr Zofia Weaver's groundbreaking book on Polish medium Franek Kluski - Other Realities?: The Enigma of Franek Kluski’s Mediumship - is on YouTube.
https://www.youtube.com/watch?v=9P0ssuvp3CM&feature=youtu.be
Details about Dr Weaver's book, with a link to a review, can be found on the SPR's website:
https://www.spr.ac.uk/book/other-realities-enigma-franek-kluski-s-mediumship-zofia-weaver-0