Kadár and Klos's work on their next project based on the Hungarian novel "Something Is Drifting on the Water" ("Valamit visz a víz", 1928) by Lajos Zilahy, and, effectively, a remake of the Hungarian film with the English international title "Something Is in the Water" ("Valamit visz a víz", dir. Gusztáv Oláh and Lajos Zilahy, 1943) was interrupted by the Soviet-led invasion of Czechoslovakia in August 1968.