The most popular intelligence & espionage books of 2021

Intelligence and espionage books tell the true stories of spies and secret services. Double agents, code-breakers, covert operations and famous betrayals are reconstructed from archives and interviews. If you enjoy spy novels, the real history is often stranger and just as gripping. This list shows the ones first published in 2021.

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Foursquare
Cover of Foursquare

Foursquare

George Bearfield

Published 2021

399 pages

Ranger Handbook
Cover of Ranger Handbook

Ranger Handbook

U.S. Department of the Army, Ranger Training Brigade, U S Army Infantry School

Published 2021

310 pages