Which Best Cryptography Books Focus On Historical Ciphers?

From New York to Rome, Istanbul, Cairo, Iceland, and beyond, Adrian races against an invisible enemy that has protected the truth for over five hundred years. But as the final cipher draws closer, he realizes the greatest danger isn't unlocking the secret... it's surviving it.

Julian Silas is a man living as a shadow. After the suspicious death of his father, a legendary royal jeweler, Julian’s treacherous stepfather seized the family’s prestigious workshop, forcing Julian into a life of clandestine labor. While his stepbrothers parade around high society in Julian’s designs, Julian remains locked in the cellar forge, known to the world only as a common servant. His only connection to his true identity is a pair of heirloom cufflinks—exquisite silver swans bearing the "Cigna," a secret mark used by his ancestors to authenticate their greatest works. Across the capital, Queen Althea is fighting a war of her own. Her advisors are pressuring her to enter a loveless political alliance to stabilize the crown. Defiant, she hosts a grand masquerade, declaring that she will choose a consort based on character, not a pedigree curated by the council. When Julian arrives at the ball in a suit of his own tailoring, he and Althea share a night of genuine connection, discussing the beauty of creation and the weight of duty. But as the clock strikes midnight, a palace security breach forces Julian to flee. In his haste to scale the garden wall, one of his Cigna cufflinks is torn from his sleeve and falls into the dewy grass. The Queen finds the token, but rather than sending her guards to find a man who "fits the suit," she turns to her greatest strength: her intellect. She recognizes that the "Cigna" isn't just an ornament—it’s a Coded Sign.

Elena's life has always been defined by hardship. Struggling to survive in a fast-paced city, she works two jobs while carrying the weight of an uncertain past. Her only connection to the life she’s never known is a mysterious locket, a relic of her mother’s secretive history. But when an unexpected summons from a prestigious law firm reveals that she is the illegitimate daughter of a recently deceased billionaire, Elena is thrust into a world of unimaginable wealth, power, and intrigue. Facing the truth about her heritage, Elena must prove her identity through a DNA test and contend with the family’s rightful heirs, including her cunning and jealous step-sister, Victoria. The world of the elite is nothing like she expected, and Elena’s struggle to fit in is made worse when a charismatic yet guarded businessman, Adrian, becomes entangled in her path. Despite their instant chemistry, trust is a luxury neither can afford, especially as the walls between them grow higher. As Elena’s inheritance becomes a battleground, Victoria’s ruthless schemes push Elena to the brink. Public humiliation, betrayal, and a tangled romance with Adrian force Elena to question her place in this new life—one that she never asked for but is determined to claim, not for the fortune, but to honor the memory of the mother who kept this secret from her. "legacy of secret" is a story of resilience, deception, and an unexpected romance. Elena’s journey is one of self-discovery, proving that sometimes, the hardest battles are not against others, but the ones we must fight within ourselves. Will she emerge victorious, or will the lies of the past tear her world apart? Only time will tell, as the truth begins to unravel and new alliances form in the most unexpected places.

Picking up where Dark Escape leaves off, Tara travels back in time to find she has a doppelganger lying in a magical coma in a cave and a very confused lover. Going back in time exposes Tara to a world that no longer exists in her future life. It's a world where wizards and enchantresses do battle for supremacy and witch doctors lay in wait for a delicious taste of human while shape shifters abound. Danger, heart ache, discovery and love await as they continue to search for the Crystal Key to Shadow Land. If you enjoy fantasy stories with peril, magic, time travel, and love, you won't want to put down book two of the Dark Escape Duo, "The Search for the Crystal Key".

I was raised with the criminal underground’s most notorious crew turned government-sanctioned mercenaries in Texas and Colorado, known as the Death Kings. My uncle is one of them known as the Gator King. Now I walk in his footsteps, leading a crew of my own with his backing. To my family, my nickname is Seraphim, but in my kingdom, I’m the Viper King. Now the boys who left me, who swore they would stay by my side to protect me, are back in town. They are attempting to become like C.H.A.O.S. who run Palomino Bay, Texas. That will not happen because Grêle, Louisiana, is my stronghold. The person they need to protect is themselves because it isn’t me. …They don’t know my secret, but I know theirs…

With her enemies in pre-civil war Virginia still seeking her death, Esmerelda is forced to return to the future only days after wedding Lance. Because it was necessary to fake her death in order to stop her enemies from following her to the future, her new husband, Lance, was forced to stay behind. He’d placed a magic box for them to communicate until he found a way to safely be with her beneath the floorboards of the house. Now, she must find it. A task that is easier said than done! “The Magic Box” is book two of the exciting paranormal-romance-mystery-thriller Esmerelda Sleuth Series