Spies disguised as priests. Secret surveillance of targets' movements. Radio frequency jamming. Tapped telephones. These might sound like acts of espionage right out of the Cold War or a spy movie-but in fact came straight from the National Football League. In Spies on the Sidelines: The High-Stakes World of NFL Espionage, Kevin Bryant provides the first in-depth investigation of spying in professional football, as well as the countermeasures utilized to defend against these threats. Spanning across all teams and eras, Bryant shines a light on the shady world of NFL reconnaissance-from clandestine photography and hidden draft prospects to listening devices and stolen documents-along with the permissible, if sometimes questionable, spy techniques teams utilize day in and day out to gain an advantage over their opponents. Written by a former Special Agent with decades of experience collecting and safeguarding information for the Department of Defense, Spies on the Sidelines reveals that, behind the game-day action, professional football can be as cloak-and-dagger as American intelligence agencies. This fascinating and expansive compilation of NFL spy anecdotes exposes the extraordinary measures teams are willing to take in order to win.