The Edge of the Knife (Audio)

Henry Beam Piper was an American science fiction author. He wrote many short stories and several novels. He is best known for his extensive Terro-Human Future History series of stories and a shorter series of "Paratime" alternate history tales.

He wrote under the name H. Beam Piper. Another source gives his name as "Horace Beam Piper" and a different date of death.

The Terro-Human Future History is Piper’s detailed account of the next 6000 years of human history. 1942, the year the first fission reactor was constructed, is defined as the year 1 A.E. (Atomic Era). In 1973, a nuclear war devastates the planet, eventually laying the groundwork for the emergence of a Terran Federation, once humanity goes into space and develops antigravity technology.

The story “The Edge of the Knife” (collected in Empire) occurs slightly before the war, and involves a man who sees flashes of the future. It links many key elements of Piper’s series.