Martha’s sister, absent in the present-day timeline, remembered for her brilliance and ambition, and whose enigmatic disappearance drives the plot.

A successful author and broadcaster tied to the CED, known for his charismatic public persona and underlying ambitions that impact various characters.

A perceptive and stylish editor at the CED, known for her wisdom and encouragement, who supports Martha in both her personal and professional challenges.

An enthusiastic and intelligent young lexicographer at the CED, whose fresh perspective and modern research methods contribute significantly to unraveling the mystery.

A lexicographer overwhelmed by personal grievances and professional frustrations, whose actions and decisions create complexities in the investigation.

Martha's father, initially reclusive, who has a hidden role in the central mystery and shares a scholarly love of wordplay with his daughters.

A character with a polished exterior and deep connections to pivotal events in the novel, influencing key revelations.

A powerful literary agent and family friend to the Thornhills, whose loyalties and decisions affect the unfolding of events.

An empathetic detective sergeant guiding the investigation, who provides an external perspective and aids Martha in her quest for the truth.

The former head editor associated with a significant institutional oversight, impacting how events unfold around Charlie’s disappearance.