Lonely Water (1973)

One of the scarier films from the Central Office of Information, 'Lonely Water' features Donald Pleasence voicing the character of the Grim Reaper, preying on the foolish youngsters who play near potentially dangerous areas of water. Creepy hints of 'The Seventh Seal' and 'Final Destination' make this a terrifyingly persuasive public information film, with Death's final, ominous "I'll be back" pre-dating Arnold Schwarzenegger by over a decade. See more public information films free on BFI Player (UK only).