Sent south by a railway company in search of oil, Doheny and Canfield head into the jungles west of Tampico on horseback and soon discover vast tracts of untapped land. They quickly build a vast oil empire on a colossal scale, but questions arise about Doheny’s dealings with the Mexican government - and a terrible tragedy calls Canfield back to Los Angeles Readings: Aoibhéann McCann Michael Patrick Presented by Peter Devlin and Conor McKay Produced by Conor McKay Executive Editor Andy Martin A BBC Northern Ireland production