A seemingly idyllic suburban community is revealed to be a heavily guarded fortress when a child is abducted, forcing two disparate mothers into a confrontation. Willa, a wife within the manicured confines of Herot Hall, lives a life dictated by social rituals and maternal duties, her world insulated by advanced security. Beyond the gates, Gren, a creature of unknown origin, lives with his former soldier mother, Dana, in a harsh, primitive existence. When Gren impulsively takes Willa's son, Dylan, the carefully constructed boundaries between their worlds shatter, initiating a desperate struggle for survival and reclamation.

This novel offers a compelling feminist reimagining of the Beowulf epic, drawing praise for its intricate world-building and its sharp critique of patriarchal structures. Critics have noted the novel's ability to weave together elements of speculative fiction, horror, and domestic drama to create a unique and thought-provoking narrative. The dual perspectives of the mothers, Willa and Dana, are frequently highlighted as a strength, providing a nuanced exploration of maternal instinct and societal pressures. The book is recognized for its powerful prose and its challenging exploration of themes such as control, freedom, and the definition of monstrosity.