The Great Abraham Lincoln Pocket Watch Conspiracy is a historical fiction novel written by Jacopo della Quercia.

[2] In 2015, della Quercia released a spiritual sequel, License to Quill, of a similar nature that concerns the lives of Christopher Marlowe and William Shakespeare in Reformation-era Europe.

[3] The book contains many references to actual events; some, such as the sinking of the RMS Titanic, are important plot points, while others, such as the destruction of the airship Erbslöh, are passively mentioned as news stories or memories.

Lincoln believes that the watch is so technologically advanced that it could not possibly have been built by humans, leading him to theorize that extraterrestrial beings are beginning to populate Alaska.

Lincoln reveals that on the same day that gas from Halley's Comet had been predicted to destroy all life on Earth, a mysterious deep blue light was seen in the night sky over the Wrangell Mountains in Alaska.

He remembers that what caused him to quit was suspicion that Morgan and Guggenheim were secretly working with the late Belgian King Leopold II, who was notorious for oppressing the natives of the Congo Free State.

The expedition proves fruitless, as Lincoln and Taft do not find evidence of any extraterrestrial activity nor any information about the pocket watch.

Meanwhile, Wilkie and Wickersham travel to New York City to talk to J.P. Morgan, forcing him to send them all of his financial reports under threat of federal investigation.

Over the next year, Lincoln writes to scientists such as Theodor Wulf and Albert Einstein for information about the pocket watch and the blue light over the Wrangells.

Lincoln also finds out that the Wrangell mountains possess large quantities of the radioactive element cesium, which may have been the cause of the blue light.

He learns that Morgan and Guggenheim have begun shipping material out of the Wrangell mines, meaning that the operation the "gentlemen" were planning is going undeterred.

The night of the meeting, Taft enters the building alone, and is told by a man named Basil Zaharoff, who claims that he works neither for Morgan nor the Guggenheims, to sign a document abolishing the U.S. Constitution.

Meanwhile, Lincoln, Wilkie and his Secret Service agents discover the superweapon in Yale's underground steam tunnels in the form of capsules of elemental cesium, which was mined in the Wrangells.

The crew finds a house in the middle of the jungle that belongs to insane, murderous Belgian military officer Leon Rom, who is found to have been the "Gentleman from Boma".

Taft, Wilkie, Lincoln and several Secret Service agents travel to London for a meeting with an informant named "The Colossus" set up by Miss Knox.

The Colossus (who turns out to be Sir Arthur Conan Doyle) reveals that Miss Knox, who has taken on the alias Violet Jessop, has found that the International Mercantile Marine is indeed smuggling materials across the Atlantic.

Robert realizes that the blue lights in the sky over the Wrangells were caused by a test of the weapon, which was purposely performed when Earth passed by Halley's Comet to mask the effects.

Leopold sees Taft jumping and prepares to shoot him, but Butt subdues the monarch as the rising waters rush over and kill them.

While Taft loses the 1912 presidential election, President Warren Harding offers him a position as Chief Justice of the United States in 1921.

As Zaharoff expresses his excitement over future weapons trade negotiations (which are implied to be with Adolf Hitler), he suddenly goes into convulsions as his maid, who is actually Miss Knox, poisons him.

During the raids of New Haven and the Titanic, Butt is portrayed to be a talented strategist and commander, as shown when he expertly directs the sharpshooters to provide cover for the protagonists.

Theodore Roosevelt is one of the most depicted characters in the book, but in most of his appearances he is disguised as Secret Service Chief John Wilkie.

She is one of the Secret Service's most talented agents, as shown by the effectiveness with which she investigates the White Star Line under the alias of Violet Jessop.

In real life, after the Titanic sank, Violet Jessop served on its sister ships, the Olympic and the Britannic, suggesting that Miss Knox's character would have continued to monitor the Line even after the Taft administration is out of the White House.

Leopold's crimes was exposed by an American historian, his empire collapsed, causing him to blame America for his being removed from power.

Charlotte Toledo of The Cauldron, the school newspaper for Cleveland State University, criticizing the action and plotline, calling them "far-fetched" and "preposterous," but acknowledged "that doesn’t subtract from the fact that this is an excellent novel, one that should be recommended.

[14] The online chapter is set several months before the beginning of the book, and shows Miss Knox applying for her job at the Secret Service.