Strange Tales of Heroic Spirit Lore ~King of the Cavern, Edmond Dantès~ (英霊伝承異聞 ～巌窟王 エドモン・ダンテス～, Eirei Denshou Ibun ~Gankutsuou Edmond Dantes~?) is a Fate/Grand Order drama CD released with the Chaldea-Ace magazine in April 15, 2017. It was written by Hikaru Sakurai and with supervision by Kinoko Nasu. The illustrations and character designs are illustrated by Routo Usagi.
It's centered around Edmond Dantès and his revenge against the men who imprisoned his mentor, Abbé Faria. It's set before the Count's well-known revenge story in Paris, and features various figures from his past.