Private investigator Leo Marks expects another tedious Tuesday when his eccentric client Arthur reports his niece Eleanor missing. All she left behind was her black notebook, filled with observations of a mysterious man at the Brooklyn diner where she worked. But Leo soon discovers Eleanor wasn't the first young woman to vanish after encountering the charming Professor Daniel Vance. As Leo digs deeper, he finds himself pursued by a grieving father, a secretive organization of "observers," and a choice that could change everything—all while trying to survive the worst coffee in Brooklyn. A witty, suspenseful mystery about the difference between watching and truly seeing.
