Mad Dogs by James Grady

Mad Dogs by James Grady **** approaching the magical 5. If you follow the link in the header you'll see a blurb about this book being a seamless blend of styles.
Grady, of course, wrote Six Days of the Condor, paranoid spy thriller that was the basis for the tightened up movie Three Days of the Condor. Very noir, very Seventies. Mad Dogs updates the concept to the 2000's, including a brief homage to the older one. Cool! Hot! Crazy!
Dan Brown wishes he could write this well, and so do a lot of other people.
You'll only put it down to take a few deep breaths.