The Atlas Complex: Olivie Blake (Atlas series)

Only the extraordinary are chosen. Only the cunning survive. An explosive return to the library leaves the six Alexandrians vulnerable to the lethal terms of their recruitment. Old alliances quickly fracture as the initiates take opposing strategies as to how to deal with the deadly bargain they have so far failed to uphold. Those who remain with the archives wrestle with the ethics of their astronomical abilities; elsewhere, an unlikely pair partner to influence politics on a global stage.