Investigate Khaliset’s Lair
All Story Quests
All Assassin’s Creed: Origins Guides

To investigate the coastline in The Accidental Philosopher in Assassin’s Creed: Origins interact with the clothes on the ground. Walk along the coatsline and interact with the blood on the ground. Follow the blood trail around the island until you reach a hut:

To investigate the coastline walk along the coats of the island until you reach a hut.

Destroy the door and talk the the guy.