Scott Hawkins' debut is a gloriously unhinged blend of urban fantasy, cosmic horror, and dark comedy that defies easy categorization. The story follows Carolyn, one of twelve 'librarians' raised by a mysterious being called Father, each trained in different catalogs of forbidden knowledge—from languages and healing to murder and resurrection. When Father disappears, Carolyn must navigate both the mundane world (she's hilariously inept at normal human interaction) and a brewing supernatural war for ultimate power.

This book excels at world-building that feels both ancient and modern. Hawkins creates a mythology that's genuinely alien yet grounded in familiar library metaphors. Carolyn is a compelling protagonist—ruthless and calculating, yet oddly sympathetic as someone struggling to understand basic human concepts like friendship and love. The supporting cast, including her fellow librarians like the violence-obsessed Michael and the animal-whispering Jennifer, each brings distinct personality to what could have been one-note archetypes.

The novel's greatest strength is its tonal juggling act. Hawkins seamlessly shifts between laugh-out-loud moments (Carolyn's attempts at small talk are painfully funny) and genuinely disturbing horror sequences involving graphic violence and psychological trauma. The pacing builds methodically, revealing the true scope of the cosmic stakes through carefully planted revelations.

However, this tonal complexity is also its main weakness. Readers expecting straightforward urban fantasy may be put off by the extreme violence and body horror, while horror fans might find the comedic elements jarring. The ending, while ambitious, feels somewhat rushed given the elaborate setup. Some plot threads involving the government subplot feel underdeveloped.

This book is perfect for readers who enjoyed the weird fiction of China Miéville or the dark humor of Christopher Moore, and who don't mind graphic content in service of a truly original story. Skip it if you prefer your fantasy straightforward, dislike extreme violence, or need likeable protagonists. It's a polarizing book that will either become a favorite or leave you completely cold—but it's undeniably memorable.