Wolfnight by Nicolas Freeling

From an Edgar award-winning British crime novelist, an Inspector Castang thriller that "has it all-politics, sex, metaphysics" (The New York Times).
It's a quiet night at the Police Judiciare in Detective Castang's provincial corner of France when a prominent politician stumbles in, claiming he was in a car accident he can barely recall, with a passenger who is his mistress-and is very likely dead. But when the unorthodox inspector's astute investigation leads him straight into the heart of a political conspiracy, the stakes are suddenly higher for Castang-and for the fate of the French Republic.
"Exhilaratingly rich in wit and humanity. Indignant at the right things." - Detroit News