We must find if Yenniku is dead. Slay the Bloodscalp Headhunters and take from them their Shrunken Heads. You must gather many, many heads, and I will inspect them to make sure Yenniku's head is not among them. And if Yenniku was killed by the Bloodscalps, then may a 600-year curse fall on the spirit of their chief, Gan'zulah! Go, adventurer. You may find many Headhunters at the ruins of Zuuldaia and Zul'Kunda, along the coast to the north.