David King is reeling from his travels through history-and the evil he's found there. The last thing he needs is his great-great-uncle Jesse's hospital-bed instructions: You can't simply do nothing. You must fix things.
David and his brother Xander's search for their abducted mother has repeatedly led them on strange and terrifying journeys as they've stepped through the portals of the creepy old house and into some of history's most turbulant moments...and confronted an unimaginably bleak vision of the future.
Now Jesse's words saddle them with an obligation to not only visit the past, but the need to rewrite it.
Fulfilling their purpose will take everything they have, both mentally and physically. But they have no choice...because everything in the past-and the future-is on the line.
Beckoning music, gleaming horses, the lure of the carousel. Cecilia says merry-go-rounds are for little kids, but Jo feels there's something mysterious and not at all childish about the carousel that has appeared overnight in Marley Street. there's something odd about the beckoning music, something strange about the gleaming horses. And why are certain people able to gain entrance to the carousel while others - try as they will - have to give up and turn away? Jo feels she must try to get in. She must buy a ticket - but will she be leading herself and Cecilia into danger?
Along with BA004, BA009 and super soldier TEX, he is a member of Omega Squad - an elite team of Time Troopers sent back into history for Operation Battle Book.
But Professor Perdu, their mission controller, is worried. Someone is stealing TIME and ENERGY bundles from the Battle Books.
Someone is determined to sabotage Operation Battle Book.
But who? And why?