Scarrow, Alex

Rescued from imminent death, teens Maddy, Liam, and Sal join forces in 2001 Manhattan to correct changes in history made by other time travelers, using a "time bubble" surrounding the attack on the Twin Towers to hide their journeys.

With teens Maddy, Liam, and Sal on their first solo assignment for a secret agency, Liam is sent back in time to prevent the murder of the father of time travel by a terrorist group, but due to a nuclear accident, he ends up in the late cretaceous period where the biggest threat is not from the legendary tyrannosaur.

"The TimeRiders travel back to Robin Hood's Middle Ages to search for the mythical Holy Grail and to stop the future from changing"--Provided by publisher.

Liam O'Connor should have died at sea in 1912. Maddy Carter should have died in a plane crash in 2010. Sal Vikram should have died in a fire in 2026. But all three have been given a second chance to work for an agency that no one knows exists. Their mission is to prevent time travel from destroying history as we know it.

A time wave has struck, altering the entire history of the American Civil War. Abraham Lincoln has followed Liam into the present from 1831, and now the world is in a dangerous state of time. If the TimeRiders can't return Lincoln to the past, the Civil War will never end.

When Maddy mistakenly opens a time window where and when she shouldn't have, Liam is marooned sixty-five million years in the past in the hunting ground of a deadly--and until now--undiscovered species of predator. Can Liam make contact with Maddy and Sal without endangering history or being devoured by dinosaurs?.

In 1994 British computer hacker Adam Lewis finds his name in a coded manuscript that is almost one thousand years old. How could this happen? When the TimeRiders travel back to Sherwood Forest in 1194 to discover the origins of the ancient message they find a strange hooded man who is interested in the same thing. Now they begin to wonder what this cryptic link from the past holds for the future.

Rescued from imminent death, teens Maddy, Liam, and Sal join forces in 2001 Manhattan to correct changes in history made by other time travelers, using a "time bubble" surrounding the attack on the Twin Towers to hide their journeys.