WHEN A TRAIN EXPLODES, IT INVOKES CHANGE A MAN AND BOY ESCAPE THE WRECKAGE AND THE JOURNEY ACROSS THE CITY BEGINS MORE BOMB EXPLODE After being released from a Massachusetts prison, Mark Toren is on a commuter train to Boston. Twelve-year-old Brian Phillips sits across from Mark at the table seat and does schoolwork. The train explodes. They escape the wreckage-Mark saving the boy. Despite the heroic deed, he irrationally believes the blame will fall on him. Felons make great suspects. Mark needs to get out of there, but the kid won't leave his side. With his reality distorted by the situation, the boy only trusts Mark. The felon. The beast. The outcast. Mark Agrees to take the boy to his father's office across Boston proper. On the way, they must avoid the mayhem the bomber inflicts on the city as bombs explode around them. There is no escape. Mark starts to suspect he is an intended target and must decide whether to take Brian to his father or separate-and take a stand.