While in Makedonia, Akantha made the acquaintance of the leader of Makedonia, and eventually became his wife, ensuring that he'd do anything for her. While Akantha lived at his house in Amphipolis, she often visited the Olynthos Fortress with her husband, and held parties there. She also managed to talk her husband into securing guards for Akantha's shipments.
However, not everyone was in love with Akantha. There were rumours she was unfaithful, though her husband didn't believe them. In fact, he set officers to investigate the rumours, and deal with those spreading them accordingly.
When Darius tasked the Spartan misthios Kassandra to find out clues within the Olynthos Fortress regarding where and when the man known as the Recruiter would meet with his minions, Kassandra also found a letter written by the leader of Makedonia to his wife, as well as a love letter, revealing Akantha's true allegiances.
Having discovered her true identity, Kassandra infiltrated the leader's house, and assassinated Akantha.
- Akantha's name is Greek (Ακανθα) for 'thorn, prickle'. Allegedly in Greek mythology Akantha is a nymph whom the god Apollo fell in love with, and then changed into the Acanthus plant in return for her rebuffing his advances.