Most of the diary contained information Elena had already told him when she’d returned to Moscow, including the way in which she’d been approached by the propaganda officer, Mikael Ivanov, and how the relationship had developed between them. It was heartbreaking and infuriating in equal measure to track her emotions, reading descriptions of how she fell for the fiction of her betrayer’s love and his noble, lofty intentions. She genuinely believed her mission was to show the abandoned and maligned Jesse Austin that he was still loved by Communist Russia. The depth of her idealism was matched only by her adoration of Ivanov. Everything she’d done – every mistake – had been motivated by love. Leo could only presume that her capacity for love was the reason she’d been targeted and selected for the operation. Reading the honey-dipped words Ivanov had used to seduce his daughter, Leo couldn’t help but wonder whether he’d failed as a father, failed to protect his children from the world of deceit that had been his profession. If there was one thing he could have taught them it was how to spot a lie.

Elena had been aware that keeping a diary was risky, particularly considering the secretive nature of her octives, and she’d resorted to a crude code, numbers for names and a shorthand system of description. If he had not been her father it would have been difficult to make sense of the contents, but he was able to replace numbers with names in the majority of cases. The propaganda officer Ivanov was number 55. Number 71 was Jesse Austin, the number reversed, 17, was his wife, Anna Austin, a choice of code that revealed a great deal about Elena’s romanticism. There were a few numbers Leo couldn’t identify by name and there was no question in his mind that they were the most important:

AGENT 6.

In her rushed entry she’d described him merely by saying:

He scares me.

The code referred to an FBI detective Elena had seen in Harlem emerging from Jesse Austin’s apartment, the man who’d followed her back to the hotel.