Book 3 in the series.
"Former MI6 agent Paul Samson is shadowing a young woman around London for a private security company. Though the brilliant Zoe Freemantle is intriguing, the work is a bit dull—until Samson is almost killed by a thuggish assassin. When other people connected to Paul come under attack, including legendary spy Robert Harland and billionaire Denis Hisami, Paul escapes to Estonia to make sense of the mysterious threat.
Note: Harland's part is rather permanent.