Geronimo, Thea, and their cousin Trap explore an old castle built by Grant Gentlemouse, the founder of New Mouse City, and when they find one hundred keys and only ninety-nine doors inside, they set off in search of the missing room.

"The new thriller in the #1 New York Times-bestselling Isaac Bell series from grand master of adventure Clive Cussler. As Van Dorn private detective Isaac Bell strives to land a government contract to investigate John D. Rockefeller's Standard Oil monopoly, the case takes a deadly turn. A sniper begins murdering opponents of Standard Oil, and soon the assassin-shooting with extraordinary accuracy at seemingly impossible long range-kills Bell's best...

Awakened by a housebreaking stranger who is revealed to be a friend of Henrik Thorvaldsen and the father of a young man he once tried to save, Cotton Malone flees with the intruder when they are pursued by a shadowy organization.

Decades after a teenage indiscretion ends his stepfather's life and sends him into hiding, Nick Horrigan lives a quiet existence under the radar that is shattered by a terrorist's demand that Nick speak with him under the threat of a nuclear retaliation.

When a vastly powerful new Russian tsar threatens America not to interfere with plans to reintegrate Russia's rogue states, espionage agent Alex Hawke investigates the disturbingly related destruction of a small midwestern community.

When a scientist he recently rescued from kidnappers is murdered, private investigator Isaac Bell discovers that a ruthless agent wants the scientist's secret new invention in order to exploit it to seize power for Germany.

The most terrifying events in history are brought vividly to life in this New York Times bestselling series! Ten-year-old George Calder can't believe his luck - he and his little sister, Phoebe, are on the famous Titanic, crossing the ocean with their Aunt Daisy. The ship is full of exciting places to explore, but when George ventures into the first class storage cabin, a terrible boom shakes the entire boat. Suddenly, water is everywhere, and George's...

Shadowy operative Shaw and Reggie Campion, a woman working for a secret vigilante group, must work together in a deadly duel of nerve and wits against a surprising enemy, in a struggle that leads them around the world at a breakneck pace.

Longing to spend time together, sisters Anna and Elsa explore the mountains, fjords, and palace of their kingdom together.

"The Presidential Agent adventures return in the most harrowing novel yet in the #1 New York Times-bestselling series. Mexican drug cartels are shooting up the streets of Laredo and El Paso. Somali pirates are holding three U.S. tankers for ransom. The President is fed up and has what he thinks is a pretty bright idea-to get hold of Colonel Charley Castillo and his merry band and put them on the case. Unfortunately, that will be difficult. Everybody...