Mithrax confides in you that his earlier disagreement with Saint-14 and Osiris weighs on him heavily. He tells you he is afraid; after fleeing with his people for so long, the thought of losing the safety of the City wounds him.
He feels as though the strange pressures of the Endless Night are bearing down on the City. He speculates this may be a weapon meant to turn a city against itself—or turn the City against those in his House.
He asks you to bring him Vex data once again. He believes a breakthrough is within reach.