Pardon This Intrusion gathers together 47 pieces by John Clute, some written as long ago as 1985, though most are recent. The addresses and essays in Part One, "Fantastika in the World Storm", all written in the twenty-first century, reflect upon the dynamic relationship between fantastika - an umbrella term Clute uses to describe science fiction, horror and fantasy - and the world we live in now. Of these pieces, "Next", a contemporary response to 9/11, has not been revised; everything else in Part One has been reworked, sometimes extensively. Parts Two, Three and Four include essays and author studies and introductions to particular works; as they are mostly recent, Clute has felt free to rework them where necessary. The few early pieces - including "Lunch with AJ and the WOMBATS", a response to the Scientology scandal at the Brighton WorldCon in 1987 - are unchanged.