The third utterly gripping thriller from the former head of MI5 and bestselling author Stella Rimington, featuring MI5 officer Liz Carlyle.'A tense, terrifying read we couldn't put down' Cosmopolitan'Gripping' Financial Times-----When MI5 intelligence officer Liz Carlyle learns of a Russian government plot to kill super-rich Nikita Brunovsky - a man who openly criticises the Putin regime from his London base - it's a race against time to track down the killer.How the man is to be silenced is unclear, but the Foreign Office dreads any kind of incident and Liz must work fast to protect him.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. Is this the assassin she is seeking?Under an assumed name, caught up in the high-octane world of the oligarchs, Liz soon finds herself in terrible danger...-------Readers love Illegal Action: 'I love the fast pace of this series, the author's witty writing style and her authenticity' 5-star reader review 'A real page-turner' 5-star reader review'This book grabbed my attention and held it all the way through the twists and turns' 5-star reader review'Fascinating!' 5-star reader review'I love Stella Rimington and her Liz Carlisle series!' 5-star reader review