Set of 1st edition/ 1st print hardbacks: Code to Zero; and The Hammer of Eden.

The Hammer of Eden (1998) stated first edition, with numberline also. a thriller about terrorism, the fbi, a cult, and san francisco. Cod to Zero - first printing stated (dec 2000) with numberline, also. this thriller is about abnesia, espionage, harvard alums, war, and the space race.