Who ordered Lionel Crabb’s final dive? And why? Giles and Sarah investigate the possible role of MI6. Was the CIA also involved? Revelations from a former spy and a royal expert implicate some very important figures in Crabb’s disappearance. Who are they? And is this why the affair is still being kept secret?

Subscribe to The Binge to get all episodes of Cover Up: Ministry of Secrets ad-free right now. Click "Subscribe" at the top of the Cover Up show page on Apple Podcasts or visit GetTheBinge.com to get access wherever you get your podcasts.

A Sony Music Entertainment production.

Find more great podcasts from Sony Music Entertainment at sonymusic.com/podcasts and follow us @sonypodcasts.

Show notes:

The Frogmen, 1949 - BBC Motion Gallery/Getty Images

John Le Carre afterword - Ben Macintyre, A Spy Among Friends

Learn more about your ad choices. Visit podcastchoices.com/adchoices