Nancy Drew finds herself entangled in a complex web of intrigue when a series of cryptic crossword puzzles leads to a dangerous search for a missing person. Nancy must navigate the social circles of a wealthy family while deciphering clues that point toward a hidden fortune and a long-standing grudge. Opposed by elusive adversaries who wish to keep the past buried, she relies on her keen observational skills and the support of her close friends to uncover the truth. The narrative follows a linear, third-person perspective that emphasizes the step-by-step logical deduction characteristic of the series.

This installment in the long-running series maintains the established formula that has defined the character for generations. The narrative relies on the familiar interplay between Nancy and her friends, providing a consistent tone that readers of the series expect. The mystery itself is constructed around the specific gimmick of the crossword cipher, which serves as the primary engine for the plot's progression. While the stakes are contained within the scope of a traditional mystery, the book succeeds in delivering the methodical investigation that remains the hallmark of the franchise.