 Returning to non-fiction and the railways, Slow Train to Guantanamo, an amusing and insightful account of travelling the length of Cuba by its antiquated train system as the country begins to undergo sweeping changes in the last days of the Castro brothers' rule was published in August 2013 by Arcadia Books.Millar has translated several German language books into English, including the "White Masai" series by Corinne Hofmann and "Deal With the Devil" by Martin Suter.He is also translator of several online books published by Lübbe AG of Cologne, Germany, including Apokalypsis by Mario Giordano.