Gambit

In this second book of the White House national security thriller series, Dr. Cameron Talbot, a famous expert on missile defense systems, returns to investigate how American airplanes could plummet from the sky - though nothing shows up on radar and none of the usual terrorist suspects have claimed responsibility.

With the country in a panic and the economy taking a nose-dive, the beautiful scientist finds herself once again enmeshed in international plots as well as a romantic triangle in the highest levels of government.