When a Russian intelligence officer insists on speaking to no one but her about cyber sabotage that has brought down a U.S. communications satellite, MI5 agent Liz Carlyle learns of a plot to hack into the West's military and reignite the Cold War.

"A Russian immigrant lies dying in a hospice in upstate Vermont. When a stranger visits, claiming to be a childhood friend, the FBI is alerted and news quickly travels to MI5 in London. Liz Carlyle and her colleague Peggy Kinsolving are already knee-deep in conspiracies, and as they unravel the events that landed the man in the hospital, Liz learns of a network of Russians and their plot to undermine the German government. Liz and Peggy set out to...

Liz has been transferred to counter-espionage–the hub of MI5 operations during the Cold War, which has been scaled back as anti-terrorism has gained priority. But there’s plenty for her to do: there are more spies operating in London in the 21st century than there were during the height of East-West hostilities. Even the Russians still have a large contingent, although now they spy on the international financial community and on the wealthy...

Still reeling from the loss of her boyfriend in a botched anti-terrorist operation, Liz Carlyle has been posted to MI5's counter-espionage desk, where she's hoping to have relative security to find her feet. However, Russia's incursions into the Crimea and President Putin's determination to silence those who oppose him, wherever they may be, quash that hope. Liz soon finds herself on the hunt for a Russian spy in Britain. And with MI5 and MI6 under...