A murder at Washington Irving’s Sunnyside. A stolen piece of American history. A detective forced to question everything she believes.

When a young docent is found murdered at Sunnyside—the historic Tarrytown home of legendary author Washington Irving—Detective Nessa Martinez is assigned to a case in which the past refuses to stay buried. Alongside the killing, irreplaceable historical documents have vanished, and someone is willing to do anything to keep their secrets hidden.

As the first female detective in the Tarrytown Police Department, Nessa has built her career around the code her father taught her: honor the badge, follow the truth, and never cross the line. But when grief strikes close to home, the boundary between justice and obsession begins to blur.

With her partner, Stitch, at her side, Nessa follows a dangerous trail connecting the murder, the stolen documents, and a shadowy secret society whose roots reach deep into the haunted history of Sleepy Hollow and the Hudson Valley.

As old legends collide with deadly modern ambitions, Nessa must uncover the truth before another secret claims another life. But when solving the case requires a choice she can never take back, she must decide how much of herself she is willing to sacrifice in the name of justice.