The thrilling novel of espionage and murder set in the dark heart of Westminster, from the UK's most exciting new spy writer

A Russian defector is found brutally murdered in a London hotel.

Only four people knew he had turned - the four most important and powerful figures in Whitehall.

There's only one conclusion:

A mole has infiltrated the highest levels of the nation's security.

Operating in secret from within Westminster's darkest corners, former spy, Solomon Vine, must uncover the traitor.

Because Britain's future hangs in the balance.

And with it, the fate of the whole world . . .

Praise for Matthew Richardson

'Proof that the spy genre is flourishing in the 21st century . . . [Richardson's] plotting has an old-school, Swiss-clock precision' The Guardian

'Compelling, intense and sharply authentic' James Swallow, bestselling author of Nomad

'A splendid tale of espionage starring an old-fashioned MI6 hero . . . Exciting spy literature' The Times

'A bang-up-to-date thriller told with old-school panache. A great read' Mick Herron, CWA Gold Dagger-winning author of the Slough House Series