.Robert Langdon Series 1 - 6 by Dan Brown

1.Angels and Demons
2.The Da Vinci Code
3.The Lost Symbol
4.Inferno
5.Deception Point
6.Digital Fortress

Angels and Demons
When a groundbreaking scientist is found brutally murdered, world renowned Harvard professor Robert Langdon is summoned to identify the mysterious symbol seared on to the dead man's chest. His conclusion, that it is the work of the Illuminati, a secret brotherhood presumed long dead, leads him to Rome, where against the backdrop of a papal election the Illuminati look set to renew their bitter vendetta against their sworn enemy, the Catholic Church . . .

The Da Vinci Code
Robert Langdon receives an urgent late-night phone call while on business in Paris: the elderly curator of the Louvre has been violently murdered inside the museum. Alongside the body, police have found a series of baffling codes. As Langdon begins to sort through the bizarre riddles, he is stunned to find a trail that leads to the works of Leonardo da Vinci - and suggests the answer to an age-old mystery which will take him into the vaults of history .

The Lost Symbol

The Lost SymbolFamed Harvard symbologist Robert Langdon answers an unexpected summons to appear at the U.S. Capitol Building. His planned lecture is interrupted when a disturbing object—artfully encoded with five symbols—is discovered in the building. Langdon recognizes in the find an ancient invitation into a lost world of esoteric, potentially dangerous wisdom. When his mentor Peter Solomon—a longstanding Mason and beloved philanthropist—is kidnapped, Langdon realizes that the only way to save Solomon is to accept the mystical invitation and plunge headlong into a clandestine world of Masonic secrets, hidden history, and one inconceivable truth . . . all under the watchful eye of Dan Brown's most terrifying villain to date. Set within the hidden chambers, tunnels, and temples of Washington, D.C., The Lost Symbol is an intelligent, lightning-paced story with surprises at every turn--Brown's most exciting novel yet

Inferno

In the heart of Italy, Harvard professor of symbology Robert Langdon is drawn into a harrowing world centered on one of history’s most enduring and mysterious literary masterpieces . . . Dante’s Inferno.

Against this backdrop, Langdon battles a chilling adversary and grapples with an ingenious riddle that pulls him into a landscape of classic art, secret passageways, and futuristic science. Drawing from Dante’s dark epic poem, Langdon races to find answers and decide whom to trust . . . before the world is irrevocably altered

Deception Point

When a NASA satellite discovers an astonishingly rare object buried deep in the Arctic ice, the floundering space agency proclaims a much-needed victory -- a victory with profound implications for NASA policy and the impending presidential election. To verify the authenticity of the find, the White House calls upon the skills of intelligence analyst Rachel Sexton. Accompanied by a team of experts, including the charismatic scholar Michael Tolland, Rachel travels to the Arctic and uncovers the unthinkable: evidence of scientific trickery -- a bold deception that threatens to plunge the world into controversy. But before she can warn the president, Rachel and Michael are ambushed by a team of assassins. Fleeing for their lives across a desolate and lethal landscape, their only hope for survival is to discover who is behind this masterful plot. The truth, they will learn, is the most shocking deception of all.

Digital Fortress

When the NSA's invincible code-breaking machine encounters a mysterious code it cannot break, the agency calls its head cryptographer, Susan Fletcher, a brilliant and beautiful mathematician. What she uncovers sends shock waves through the corridors of power. The NSA is being held hostage ... not by guns or bombs, but by a code so ingeniously complex that if released it would cripple U.S. intelligence. Caught in an accelerating tempest of secrecy and lies, Susan Fletcher battles to save the agency she believes in. Betrayed on all sides, she finds herself fighting not only for her country but also for her life, and in the end, for the life of the man she loves

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