On a Tuesday in April, 100 ordinary Americans are gunned down at precisely the same time in 100 ordinary small towns.

Who orchestrated the execution-style murders? And will they strike again?

In the midst of shock, grief and outrage, with an ineffective President in the White House, the directors of the FBI and CIA work together to stop the insanity and reduce the panic that grips the nation.

American in the Crosshairs, a can't-put-it-down mystery races from Washington, D.C., to Detroit to Oakland to Montana to Biloxi and back to Washington for the surprising conclusion.