Independently intelligible sequel to the dark fantasy Bitter Seeds (2010), something like a cross between the devious, character-driven spy fiction of early John le Carré and the mad science fantasy of the X-Men.
Previously, during World War II, the Nazis developed warriors with devastating psychic powers. To combat them, British warlocks used their inherited lore to summon the Eidolons, irresistible demons beyond time and space, whose price for cooperation is extracted in the blood of innocents. Now, in 1963, after the Soviet Union defeated the Nazis and took over their horrid experiments, their empire stretches from the Pacific to the Atlantic save only for a narrow coastal strip west from Paris—America never entered the war and is still mired in a four-decades-long depression. Gretel and her younger brother Klaus, Nazi products captured by the Soviets and forced to cooperate with their experiments, escape from a prison camp and make their way to England where they insist on contacting former spy chief Raybould Marsh who, beset by personal tragedy, has turned into a belligerent drunk barely holding on to his job as a gardener. Marsh's erstwhile colleague, the aristocratic Will Beauclerk, wracked with guilt over his part in summoning the Eidolons and subsequent slaughter of innocents, has betrayed the whereabouts of England's warlocks to the Soviets, who are quietly assassinating them. It will be Marsh's task to unmask Will's treachery, learn what greater designs the Soviets have and counteract them, and deal with the seemingly untouchable Gretel, a psychic so formidable that she has foreseen all possible futures and is manipulating everybody toward an end only she knows. Despite the jaw-dropping backdrop and oblique plotting, the narrative is driven by character and personal circumstance, the only possible drawback being certain important developments that annoyingly take place offstage.
Grim indeed, yet eloquent and utterly compelling.