In 2014, Sarah Koenig and Dana Chivvis traveled to Guantánamo Bay hoping to find the untold stories about the infamous military prison. They found many friendly soldiers willing to repeat Army talking points, but no one willing to be candid about life at the detention center.

A decade later, the pair reached out to those people, many who had left the military and were now willing to go on the record. Many remembered Gitmo as a plum wartime assignment in sunny Cuba, filled with strong drinks and sexy personnel. Others have slowly come to terms with what the mission was and the role they played in it. Koenig also spoke with former prisoners, some with little or no connection to the Taliban or Al Qaeda when they were detained.

In season four of “Serial,” Koenig and Chivvis drift away from the podcast format it popularized ten years ago, telling a variety of stories week-to-week about Guantánamo Bay from the people who were there. Instead of a deep investigation into policies and procedures at Gitmo, the hosts seek personal, unexplored stories from more than 100 of those on the ground. The podcast promises an oral history of the military detention center long cloaked in mystery and infamy.

OUR SPOILER-FREE REVIEWS OF SEASON 4 OF "SERIAL" BEGIN IN THE FINAL 10 MINUTES OF THE EPISODE

In Crime of the Week: distill my heart.

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