Author Alan Glynn joined John Kelly on the Mystery Train Sunday Service on RTÉ lyric fm - listen above.
His novel The Dark Fields became the hit film Limitless starring Bradley Cooper, and he spoke to John about the slow road to success and not having a plan B.
His very fine music choices include Coleman Hawkins, Nicholas Britell and Ennio Morricone...
Mystery Train with John Kelly, Sunday to Thursday, 7 - 9pm, RTE lyric fm - listen back here.
