"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...

He was the world's greatest athlete, and a hero—until his medals were taken away.

Stosh is shocked when his enemy, Bobby Fuller, begs him for a favor. He wants Stosh to take him back in time to meet Native American Jim Thorpe—an Olympic champion who lost his medals in a scandal. Thorpe went on to play professional baseball and football, but he could never again achieve such fame. His name was disgraced.

Join Stosh and

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With his ability to travel through time using vintage baseball cards, Joe takes Flip with him to find out whether Satchel Paige really was the fastest pitcher ever.

Joe and his longtime enemy, Bobby Fuller, use a vintage baseball card to travel in time, hoping to stop Jim Thorpe from participating in the 1912 Olympics and losing his medals, but instead they watch Thorpe struggle during his first season with the New York Giants.

"The Flashback Four are coerced by a secret government organization, NOYB, to travel to July 1804 Weehawken, New Jersey, to witness the duel between Alexander Hamilton and Aaron Burr"--Title verso page.

Stosh travels back to 1969 to try to prevent the untimely death of Roberto Clemente, a legendary baseball player and humanitarian, but upon his return to the present, he meets his own great-grandson who takes him into the future, and what he finds there is more shocking than anything he has encountered in his travels to the past.