In the safety of The Ether Tank, the notorious Spider greets you as an old friend.
"Seems like only yesterday I was in the Tangled Shore," he says. "Now I'm nestled in the bosom of the Traveler."
His voice drops. "Let's keep the details of my ignominious rescue between us," he requests.
Out of gratitude (or perhaps something less altruistic), he agrees to let you keep his Skeleton Key and continue using his ship to fight against Eramis and the old crews that serve her. He even offers to prepare some accessories no captain should be without.
"Go show those pirates what happens when they cross the Spider," he snarls.