This is an introduction to Trotsky's pamphlet, "The Lessons of Spain: The Last Warning" (1937), written by Ted Grant in collaboration with Ralph Lee while they were in the Workers' International League: a predecessor to the International Marxist Tendency. Ted and Ralph's introduction was praised by Trotsky himself in a letter to the WIL in 1938, which was suppressed and hidden for 80 years before finally being reunited with its rightful owners.

It is a well-known fact that accident can play a considerable role in both history and the lives of individuals. In the course of my life I have observed many accidents and extraordinary coincidences. But I have never experienced such a unique and unforeseeable concatenation of circumstances as that which I am about to relate here.