Company of Spies by Laurence Daniel Tuck
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Apparently unrelated people are committing suicide and Anna Lingaard suspects foul play. She unearths a conspiracy that could rock the foundations of the British Security Services and when Lingaard meets the enigmatic Arthur Prendergast she is thrust into a shady underworld that exists in her own office.
In the spirit of John Le Carre and Len Deighton, Company of Spies is a darkly comic story of a secret service struggling under the weight of its own administrative red tape and office politics. Prendergast and Prendergast Returns is as funny as it is gripping. Like a cross between Tinker Tailor Soldier Spy and The Office. The world of Espionage has never required so much admin.
Company of Spies is the first in a series of books taken from the Prendergast Files. Included in this book is The Librarian, a short story which follows on from Company of Spies.