If Michael Gallatin racing to uncover and thwart “Iron Fist” before D‑Day had you glued to the page, you’ll love the surgical precision of The Day of the Jackal. You follow Inspector Lebel’s meticulous manhunt step by step as he tries to unmask the Jackal—an elite assassin moving through forged identities, border crossings, and ruthless contingencies with the same cool competence Gallatin brings to his behind‑the‑lines work.

If the way Gallatin’s lycanthropy turns espionage into something uncanny—slinking through occupied territory, drawing on feral instincts, and the wintry origin flashbacks to his Russian pack—hooked you, Declare delivers that same secret-history charge. Andrew Hale’s MI6 missions entangle him with djinn on Mount Ararat and in the Rub’ al Khali, while real figures like Kim Philby complicate an occult Cold War as eerily plausible as Gallatin’s covert hunts.

If the darker edges of The Wolf’s Hour stuck with you—the torture rooms, sudden ambushes, and the pitiless stakes as Gallatin stalks through occupied villages—The Eagle Has Landed brings that same hard bite. You’ll track Steiner’s paratroopers on a doomed mission to kidnap Churchill, where every disguise, firefight, and split‑second choice carries the fatalistic tension you felt when Gallatin closed in on the Nazis’ D‑Day threat.

If you tore through Gallatin’s race across occupied France and his infiltration set pieces en route to stopping “Iron Fist,” Jackdaws hits the same adrenal pace. Felicity “Flick” Clariet recruits an SOE team to blow a critical telephone exchange on the eve of D‑Day—snap disguises, cat‑and‑mouse with the Gestapo, and clockwork action that echoes Gallatin’s tight, do‑or‑die operations.

If you enjoyed how The Wolf’s Hour braids Gallatin’s Russian‑pack past into his present hunt for “Iron Fist,” with Nazi antagonists closing in from other angles, Cryptonomicon amplifies that layered design. You’ll move between WWII codebreakers like Bobby Shaftoe and Lawrence Waterhouse and a 1990s data‑haven scheme with Randy Waterhouse—parallel plots that click together with the same satisfying, spy‑crafty complexity.