This is an extremely thorough analysis of the CIA-backed overthrow of the Arbenz government in 1954.
The strength of the this account is in the exhaustive detail and the balanced academic approach. If you are looking for a light pop-history read, this certainly isn't it.
But the amount of archival material, interviews and academic analysis referenced in this work is substantial. For this reason, it ought to be considered the definitive account of one of the most important events in Latin American history.
The only missing piece is this: originally published in 1982, this account could not include the most serious consequences of the CIA-backed coup - the Guatemalan civil war and genocide of the 1980's and 1990's, which continues to reverberate in Guatemala today (to say the very least).
But if there is anyone who doubts whether the United States has some of that blood on their hands, this book is a must-read. While Immerman is careful to frame American attitudes and actions in the proper Cold War context, it remains a damning indictment of a failed foreign policy of direct intervention.