Agent Liz Carlyle Series

For MI5 officer Liz Carlyle, the nagging complications of her private life are quickly forgotten at Monday’s counter-terrorism meeting. An invisible may have entered mainland Britain. An ‘invisible’ is a terrorist who is an ethnic native of the target country, who can cross its borders unchecked and move about unnoticed – the ultimate nightmare. By the time they're identified, it may be too late. The intelligence operation that follows will test Liz to the limit. Who or what is the target? Where and who is the invisible? With each passing hour the danger increases.

When Intelligence Officer Liz Carlyle learns from one of her agents that suspicious meetings are taking place at an Islamic bookshop, she trusts her instinct that a terrorist cell is at work. So Liz is surprised when Wetherby suddenly takes her off the case. And she's shocked to hear the reason why: he has received a tip-off that a mole is at work inside British Intelligence.

When MI5 intelligence officer Liz Carlyle learns of a Russian government plot to kill super-rich Nikita Brunovsky – a man who openly criticizes the Putin regime from his London base – it's a race against time to track down the killer. As she goes undercover, desperately trying to find out who in Brunovsky's retinue might betray him, Liz discovers that an 'illegal' Russian agent has arrived in London.

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.