Letters from the Sunken City. The Women of the Royal Atlas, #4

For four years, he has trusted her mind. He has never known her name. Translator and epigrapher Eleni Arakelian has spent years corresponding with celebrated explorer Thaddeus Rivington under the signature E. A. North. Through their letters, she has corrected his translations, guided his expeditions, challenged his assumptions-and fallen dangerously close to loving the private man hidden behind his public reputation.
Thaddeus believes his brilliant correspondent is an elderly gentleman. Then his final telegram reaches London with an error he would never make. Recognizing the mistake as a secret distress signal, Eleni follows his trail from the concealed map rooms of Meridian Hall to the eastern Mediterranean city of Vezra. There, Thaddeus is being held under polite guard while a diplomatic antiquarian searches for an underground archive buried beneath flooded ruins.
The archive contains treaties, property records, and community histories that could expose a proposed territorial agreement as a calculated theft. Someone intends to remove the inconvenient documents, rewrite the surviving translations, and turn a false map into legal ownership. To recover the evidence, Eleni and Thaddeus must race through a ceremonial procession, escape across rock-cut tombs, survive a trap triggered by mirrored sunlight, board a moving river barge, and descend into a city where centuries of history wait beneath rising water.
But the most dangerous revelation is not hidden in the ruins. When Thaddeus discovers that Eleni is the correspondent whose words have shaped his career, their extraordinary intimacy becomes a reckoning. He must face the assumptions that allowed him to admire a mind while imagining it belonged to a man. Eleni must decide whether she can claim both her work and the love she concealed behind another name.
With the archive flooding and an empire preparing to accept a convenient lie, Eleni must translate the past quickly enough to save the living-and make certain that this time, history records the woman who uncovered the truth. Letters from the Sunken City is the fourth novel in The Women of the Royal Atlas, a sweeping Victorian adventure-romance series about brilliant women whose maps, translations, illustrations, and discoveries changed the world while others claimed the credit.