Secret Service — Tom Bradby

An MI6 officer must find a traitor hiding within the highest ranks of government in a new thriller with “resonant echoes of le Carré” (Booklist, starred review).

Senior MI6 officer Kate Henderson is in possession of the political equivalent of a nuclear bomb. She heads up the Russia Desk of the Secret Intelligence Service, and one of her undercover operations has revealed some alarming evidence that a senior UK politician is a high-level Russian informer.
 
Determined to find the identity of the traitor, Kate must risk everything to get to the truth. Until a young woman is brutally murdered as a consequence, which puts Kate and her team under the spotlight. With blood on her hands, her reputation to uphold, her family hanging by a thread, and an election looming, Kate is quickly running out of options -- and out of time . . .
 
From the author of Shadow Dancer and The White Russian, who has been a finalist for multiple Crime Writers Association awards, this is a tense, timely novel of secrets, betrayals, and spycraft.