TimeRiders: The Doomsday Code (Book 3) by Alex Scarrow

TimeRiders: The Doomsday Code (Book 3) : Paperback : Penguin Random House Children's UK : 9780141333489 : 0141333480 : 16 Jun 2011 : Liam O'Connor should have died at sea in 1912. Maddy Carter should have died on a plane in 2010. Sal Vikram should have died in a fire in 2029. Yet moments before death, someone mysteriously appeared and said, 'Take my hand ...' But all three have been given a second chance - to work for an agency that no one knows exists.