"Readers expect excitement and intrigue in David Baldacci's books, and Zero Day is no exception...As Baldacci's new hero narrowly escapes countless close calls, the pairing of the author's imagination and knowledge create a wild ride for the reader. Puller is gutsy, brash and likable. Best of all, he survives to reappear in the next book of this new series."—The Free-Lance Star
"Zero Day is a nifty, paranoid thriller disguised as a murder mystery, and Baldacci advances it at a speedy clip with a nice mix of intrigue, tantalizing clues and the occasional explosion...Baldacci's books are fast-paced battles between good and evil."—Richmond Times Dispatch
"An effective thriller."
—San Antonio Express-News