Niall Horan in Downton Abbey! (After season 4, begins before Xmas special, season 4 spoilers!) Things at Downton are as normal as ever. That was until post-war problems see the Crawleys welcoming their Australian Cousin, Genevieve Crabbesbrook, to live in Downton and Tom Branson's nephew Niall Horan, who is invited by Tom to help with Sybil. With the downstairs staff both becoming as increasingly interested in the two new members of the family as much as the Upstairs folk, will a romance transpire between the two new guests? And will they be able to inspire others at Downton for the better without anyone in the House upstairs or down getting in their way?