"Set against the construction of the Eiffel Tower, this novel charts the relationship between a young widow and an engineer who, despite constraints of class and wealth, fall in love. In February 1887, Caitriona Wallace and Emile Nouguier meet in a hot air balloon, floating high above Paris a moment of pure possibility. But back on firm ground, their vastly different social strata become clear. Cait is a widow who because of her precarious financial...