The Passing Bells the conclusion of the war. The series was announced by the BBC in October 2013, along with other programmes that played a part in the BBC World War I centenary season. It was a Red Planet Production with BBC Worldwide as the distributor. Filming took place in Poland. Telewizja Polska and Apple Film Production were co-producers. The series aired in the pre-watershed time-slot of 7pm, and the script was written for a younger audience and family viewing. The title was taken from the first line of Wilfred Owen's 1917 poem, "Anthem for Doomed Youth": "What passing-bells for these who die
Tithonus (poem) novel by Aldous Huxley originally published in 1939 and retitled "After Many a Summer Dies the Swan" when published in the USA, is taken from the fourth line of the poem. It tells the story of a Hollywood millionaire who, fearing his impending death, employs a scientist to help him achieve immortality. A season 6 episode of The X-Files entitled "Tithonus" tells the story of a man cursed with immortality who works as a photographer taking photos of individuals who he can sense are close to death. He snaps these photos hoping to see the Grim Reaper and to die,