The Budapest Cipher - The Numbers That Lie #958519

Her father left one word behind. She has spent five years refusing to follow it. Budapest is where she stops refusing.
Dr. Elara Vasquez is the IMF's most formidable forensic economist — a woman who speaks the language of financial architecture the way other people speak their mother tongue, and who has spent six years finding the money that powerful institutions do not want found. She arrives in Budapest to investigate anomalous patterns in the Hungarian banking system, carrying three encrypted hard drives, a forensic workbook annotated since Zurich, and a message from a Directorate Nine intelligence officer she has never met that says: Your father was murdered. The evidence he built is yours. I'm sorry.
The envelope on her hotel pillow — placed with impossible precision before she was assigned the room — contains only her father's name and four words: He knew what mattered. It is either a warning or an invitation. By midnight, a figure has entered her room in the dark. She throws a lamp at him. He says: Impressive. They are, against all probability, on the same side.
Callum Rhys is a former SIS operative who spent four years off the official record, running an unsanctioned operation against the same network that killed a Spanish finance minister in Milan five years ago and filed it as a car accident. He knows what Elara's father found. He knows what it cost him. And he needs her economist's mind to follow the money to its origin — a point in Vienna, toward which four hundred million euros have been moving through the Hungarian banking system for seven years with accelerating speed.
The Budapest Cipher is the second novel in The Sovereign Files series, and the one that cracks the financial architecture wide open. With a heroine who is precise, unsentimental, and wholly unprepared for a man who operates in shadows and leaves her father's files open on purpose, and a mystery that moves from the marble corridors of the Hungarian National Bank to a gala at Buda Castle to a safehouse that changes everything, this is a thriller built on forensic intelligence and the specific weight of grief that has been carried too long to be put down all at once.
For readers of Charles Cumming, Kate Atkinson, and the best of modern British spy fiction. For anyone who wanted the financial crimes investigation to be the thriller.