Last Hurrah Help Please

Last Hurrah Zaraiek Caverns and Time. I really need help please. I have signed up for this quest about 30 time. Every time i get to Tyrhold Reservoir There is no one there. I can not get this quest to start. Even after choosing who I will aid this week. Every Video I have watched and everyone i have gotten info from says and shows people there when they get to thyhold reservoir. Please Please Please help me on this.