Luke Daniels is in London, between assignments with the Magellan Billet, when he receives a frantic call from an old friend. Jillian Stein is in trouble. She made a mistake and now her life may be in danger. She needs Luke's help. Immediately. Racing toBelgium Luke quickly finds that she was right. A shadow team of highly-trained operatives are there on the hunt. Intervening, he finds himself embroiled in a war between two determined sides - one seeking...

One night, while lying in bed next to her husband, Claire Devon suddenly hears a low hum. This innocuous sound, which no one else in the house can hear, has no obvious source or medical cause, but it begins to upset the balance of Claire's life. When she discovers that one of her students can also hear the hum, the two strike up an unlikely and intimate friendship. Finding themselves increasingly isolated from their families and colleagues, they fall...

The founder of Private, the world's biggest and best detective agency, Jack Morgan investigates the murder of his former U.S. Marine comrade, which appears to be linked to another murder in Moscow, and arriving in Russia, begins to uncover a conspiracy that could have global consequences.