"In New York Times bestselling author Dan Gutman's all-new series, which blends fascinating real history with an action-packed adventure, four very different kids are picked by a mysterious billionaire to travel through time and photograph some of history's most important events. This time, Luke, Julia, David, and Isabel are headed to the deck of the doomed Titanic. Their mission? Capture a shot of the sinking ship, then come right back. The only...

"Before they were legends, they were friends. All for one and one for all! On the first day of a family trip to Paris, Greg Rich's parents disappear. They're are not just missing from the city - they're missing from the century. So Greg does what any other fourteen-year-old would do: he travels through time to rescue them. Greg soon finds out that his family history is tied to the legendary Three Musketeers. But when he meets them, they're his age,...

Time has gone wrong, and best friends Dak Smyth and Sera Froste, together with the young Hystorian Riq, must use the infinity ring to travel back to one of the Great Breaks--a mutiny on the Santa María--to correct history and defeat the SQ.

When her embarrassing middle name is revealed at school, mad scientist Franny K. Stein experiments with time in order to return to the past and give herself a more dignified name.

"When Greg and the Musketeers return to Paris and find the city under siege, they leap into action to prevent King Louis from being overthrown and history from being changed forever"--

Four stepsiblings travel through time and space to help a scatterbrained phoenix gather the materials she needs to hatch her egg.

Mira receives a postcard from her missing mother from Paris and she and her father travel to France to search for her, but while visiting Notre Dame, Mira touches a gargoyle and is whirled into the past, where she meets the famous painter Degas and catches a brief, shocking glimpse of her mother.

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When the baddest of bad guys threatens the world with a giant black hole, Ben Braver is the only one who can stop it. Ready or not, he's about to learn what it really means to be a hero (from back cover).

David, Xander, Dad, and Keal discover that Taksidian wants their house for himself in order to use the time portals to build an empire, and unless they can find his weakness in time, the future of the world itself may be in danger.