This book was a bit of a slog, with so many characters introduced in the first half and no clue as to which ones were vital to the story. *And* it took fully half the book to get out of Paris and on to Mykonos, where the reader was promised the real action would take place. Historian-in-training and would-be spy John Craig fell into the plot when his old professor Sussman insists he’s seen a ghost: Heinrich Berg, the Nazi who had sentenced his family to death in a concentration camp was walking the streets of Paris, despite the fact that was long dead. Craig and an international group of operatives set out to unravel the mystery of Berg’s existence, but much of the action in this book takes place offstage while the men concerned sit around in cafes and talk about it. The last third picks up a bit, as the plan to capture Berg comes to fruition on Mykonos and Craig gets to test his mettle as a steely operative. I would try MacInnes again—her descriptions of place and flashes of humor were worth sticking with—and I am assured others of her books are better.