It is the summer of 1934 when MI6 receives intelligence that two German scientists have made a breakthrough in germ warfare. British agent Elena Standish must return to Berlin to prevent unimaginable horror and, with the help of her trusted friend, Jacob Ritter, embark upon a mission fraught with fear and uncertainty. Meanwhile, her grandfather's old adversary Johann Paulus has risen to power as an adviser to Hitler ...
The fourth novel in Anne Perry's tense and exciting spy thriller series.