The Move From Plays To Novels
After enjoying plenty of success with his plays, James Leo Herlihy decided to switch to writing novels. He was a natural-born storyteller, whose work seemed to work in a range of different mediums, so he adapted perfectly to the art of novel-writing, producing three novels in total.
Source: IMDB
His first novel, All Fall Down, was released in 1960 and was later turned into a feature film directed by John Frankenheimer, starring Eva Marie Saint and Warren Beatty. He then wrote Midnight Cowboy, released in 1965, and finally, The Season of the Witch, released in 1971. All of his works received critical acclaim.