Head to Fort Tiryns in northeastern Argolis. Call Ikaros to mark the target and surrounding enemies. Wait until night to sneak in, and head up and over the walls.

Sneak to building next to a section of fences and a lootable chest. Interact with the door and a cutscene will play.

Dymas, who allegedly has Hippokrates's notes, says the notes were burnt up but has them memorized. But he's treating a patient. If you can pay him enough, 10,000 drachmae, he'll leave with you. If you can't pay, he'll ask you to retrieve his bone forceps deeper in the fort.

Once Dymas is satisfied, return to Hippokrates back at the Cave of Pan. If this mission is done after The Priests of Asklepios, Hippokrates's patient will die.

No matter what happens to his patient, he will reveal more clues about Myrrine. After this conversation, the mission will be complete.