The story of the uncle’s madness is central to “a servant to servants.” which lines tell the most haunting part of the story? "some thought he had been bitten by a dog. because his violence took on the form of carrying his pillow in his teeth; " "anything they put in for furniture he’d tear to pieces, even a bed to lie on." "a bride, to take care of such a creature, and accommodate her young life to his." "he was before my time — i never saw him; but the pen stayed exactly as it was there in the upper chamber of the ell,"

"He was before my time — I never saw him;  

But the pen stayed exactly as it was

There in the upper chamber of the ell,"

Explanation:

In this part of the story we are introduced to a dark moment, where the boy's parents signs an authorization to send him away. This is because this family has a history of mental illness and the boy's parents do not want to be bothered with this responsibility of taking care of someone with this type of problem. The pen they used to sign that warrant has never been touched since that day, and that brings a somber and haunting tone to the passage.

i think that will have something to do with the mississippi river but google will know the full answer for sure