Trainspotting A Screenplay Author:John Hodge A screenplay based on the novel by Irvine Welsh. — In Trainspotting, Mark Renton, an unrepentant drug abuser is doing his best to escape the claims and responsibilities of life. Harrowing yet hilarious. Trainspotting charts the disintegration of a set of friends whose obsession with drugs and mayhem leads them inexorably to self-destruction. Intr... more »oduced by the screenwriter, John Hodge, the book also contains an interview with Irvine Welsh, the author of the cult novel on which Trainspotting is based.