Double Entry

The most dangerous weapon in Europe isn't a missile. It's a decimal point.

Rainer Müller is a man of mathematics. As a senior auditor for the Oversight Committee of Intelligence Services (OCIS), he believes the world can be understood through ledgers, frequencies, and the cold, hard logic of a balanced book. He doesn't care about politics; he cares about the truth found in the numbers.

But when Müller uncovers a ten-million-euro "black hole" in a failed intelligence operation, he realizes the...