The article presents the discussion with the book by Antoni J. Wręga "PRL w Dallas. Rzecz o zacieraniu śladów zamachu na prezydenta Kennedy’ego" which brings some new information and interesting (though sometimes risky) hypotheses on the circumstances of the assassination and possible conspiracy. It focuses around the role of George de Mohrenschildt in the affair, covering tracks, as well as clear clues of his ties with the intelligence of the communist Poland (SB) and possibly the Soviet Union.