Mystery In Manhatten

1917. New York. Notorious spy, Fredrick Fredricks, has invited Fiona to Carnegie Hall to hear a famous soprano. It's an opportunity the War Office can't turn down. Fiona and Clifford are soon on their way, but not before Fiona is saddled with chaperon duties for Captain Hall's niece. Is Fiona a spy or a glorified babysitter? From the minute Fiona meets the soprano aboard the RMS Adriatic it's treble on the high C’s. Fiona sees something — or someone — thrown overboard, and then she overhear...