When We Learned to Fly. Young Dutchwoman Isa has lost everything - her family, her home, her child. Then she sees the chance to save another baby from certain death and seeks refuge in a circus. But to remain undetected, she must collaborate with the acrobat Astrid - on the trapeze. Astrid has a secret of her own that she wants to keep at all costs. Reluctantly, the two women grow closer during the dangerous training. Until Isa falls in love with the Frenchman Luc, putting everything at risk. "A book I had to read in one sitting - the friendship of these two very different women during World War II has stayed with me." Kristina Baker Kline, author of "The Orphan Train.".