Meet Lilly Tweed. Former Agony Aunt. Purveyor of Fine Teas. Accidental Sleuth. It's all steam ahead as Lilly and Archie board The Lakes Express on their first official date. The train is full of writers travelling to a conference, which adds to the ambience and piques Archie's interest. But what starts as pure luxury ends in chaos. On the journey home, the train screeches to an unsanctioned stop in the middle of nowhere. Night has fallen, it's pitch black outside, and a body has been discovered. The scene staged to mimic one of the best loved crime novels of all time. Currently on board a luxurious 1930s steam train, the homage is not lost on Lilly and Archie, who are asked to help. But its meaning eludes them. Can they discern the truth from myriad lies? Cut egos down to size while dealing with bouts of creative jealousy and finally unveil the culprit? And can they do it before the police arrive?