Poetic Riddle

From: Detective
Description: "A head is a part of a body"... I'm sure we'll find the next part of the mechanical man nearby. Seems like we have to search blindly. Let's begin.
Completed: We already have four parts of the mechanical man created by the Collector. But we are still missing the last part - the moving mechanism. There's another clue inside the torso. "Where the world's fabric thins, where spirits speak and fates are shaped, where brain creation and the power of knowledge is hidden." Where do spirits speak?