Agent Liz Carlyle Series

An “invisible” is CIA-speak for the ultimate intelligence nightmare: The terrorist who, because he or she is an ethnic native of the target country, can cross its borders unchecked, move around that country unquestioned, and infiltrate its institutions with ease. An invisible on mainland Britain was the worst possible news. For Liz Carlyle, an MI5 Intelligence Officer, this report from MI6 marks the start of an operation that will test her to the limit and put her own life in jeopardy.

Liz Carlyle is a smart, impassioned MI5 intelligence officer. When one of her agents reports suspicious meetings taking place at an Islamic bookshop, she trusts her instinct that a terrorist cell is at work. But she's surprised when her boss suddenly takes her off the case and shocked to hear why: he has received a tip-off that a mole, a "secret asset", has been planted in one of the branches of British Intelligence.

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. And in her new assignment, Liz quickly uncovers a plot to silence one of these Russians: Nikita Brunovsky, an increasingly vocal opponent of Vladimir Putin.

MI5 Intelligence Officer Liz Carlyle is summoned to a meeting with her boss Charles Wetherby, head of the Service's Counter-Espionage Branch. His counterpart over at MI6 has received alarming intelligence from a high-placed Syrian source. The future of the whole of the Middle East is at stake and the deadline for action is drawing ever closer...

MI5 officer Liz Carlyle is posted to Northern Ireland. From the moment she lands in Belfast, danger follows. She soon discovers that the peace process in the province is precarious. Then a source reports strange goings-on at a house on the Irish Sea owned by the Fraternity, an organisation Liz suspects of being a front for renegade former IRA men. Its head is Seamus Piggott, an Irish-American with a gun-running past.