Infinity ring

Dak, Sera, and Riq land back in the United States in 1850, in the middle of heated debates about slavery and the Underground Railroad. However, the SQ has taken control of the Railroad, and now the three do not know who to trust, even as Riq risks his life to save that of a young boy.

"At long last, Dak, Sera, and Riq travel back in time to the moment it all began. Their mission: to save the life of young Alexander the Great. But they are not the only time travelers in ancient Greece. An epic battle against their most dangerous foe awaits them...and history will be written by the victors"--Back cover.

Dak, Sera, and Riq have fixed the Great Breaks in history, but SQ is not beaten yet, and the biggest, boldest Infinity Ring adventure of all time has just begun.

Time has gone wrong, and friends Dak, Sera, and Riq must use the infinity ring to travel back to a spy mission that could change the outcome of World War II.

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 Maria, to correct history and defeat the SQ.

World War II is raging across Europe, and the Axis and Allied powers are in a stalemate. Dak, Sera, and Riq can thwart the Nazis' plans for invasion... if they can pull off the most daring spy mission of all time.

Danger lurks in the desert of Baghdad during the Dark Ages and Dak, Sera, and Riq must act fast to save the world's greatest library from utter destruction.

Sera has a secret. She's seen the future, and it is a terrifying place. Unfortunately, she can't do anything to prevent the Cataclysm while stranded with Dak and Riq thousands of years in the past. Their only hope lies with the ancient Maya, a mysterious people who claim to know a great deal about the future. Is there more to these ancients than meets the eye?.

Dak, Sera, and Riq are three time travelers on a mission to save history, but they're totally unprepared for the year 1850. With the United States on the verge of civil war, runaway slaves in the South look to the Underground Railroad for help escaping to freedom. But there's a traitor in their midst. Now Dak and Sera are left wondering whom to trust, while Riq risks everything to save the life of a young boy.

When thousands of Viking warriors descend on medieval Paris, Dak is captured and forced to work with the invaders while Sera and Riq defend the city, a situation that places them on opposing sides.