And as much as David Chance would like to hide from them, he can't. Words keep leaping off objects around him, forming messages in his mind. But how is this possible? Has his brain suddenly taken an evolutionary leap forward, or are the mysterious messages proof of divine intervention?Driven to answer a question he'd long ago abandoned, and stalked by the killer he's trying to stop, David risks everything to follow the messages to a dirty bomb set to go off in the heart of Boston. But can he trust the author of the messages to protect him from a terrorist who seems to know his every move.