See here for the film: https://www.youtube.com/watch?v=-J9dSpMHEFo.
Nik Hayes is a UFOlogist with a difference. Most of the objects he detects cannot be seen with human eyes and can only be detected with special cameras. See here for his websites including how to buy his book: https://www.questfortheinvisibles.co.uk/ and: https://www.youtube.com/user/QFTI/featured and: https://www.waterstones.com/book/quest-for-the-invisibles/nik-hayes/9781585091492. See here for Nik's documentary: https://www.youtube.com/watch?v=9aRUc0d6hkw.