This is the 7th book in the Maisie Dobbs series and my recommendation is that the books are best enjoyed when read in order because of plot and character development. In this latest addition, it is 1932 and Maisie has new clients. An wealthy couple from Boston, Massachusetts comes to London to ask Maisie to find the young English nurse that their late son, Michael, fell in love with during the first World War. Michael's remains were found years after the war in a field in France along with his cartography tools and a packet of letters from the unnamed nurse. Although Michael was an American citizen, his father was from England and Michael found himself drawn back to England when war was declared so that he could use his skills as a cartographer in the British army. Maisie faces a number of challenges as she tries to understand the importance that cartographers played in the war, find the nurse, and deal with the failing health of her mentor Maurice. As in the previous Maisie Dobbs novels, the emphasis in this book is the overwhelming importance that World War I played in English society and especially the lingering effects of war time experiences that continued to haunt individuals as Europe moved through the depression years and drew closer to the outbreak of the Second World War.