Descent (Drama, PG-13/T)

Good story overall. You know me and I wish there was more Rodney whumpage, but you get a little and a bunch of Sheppard whump. Mostly focuses on John, Rodney, and Elizabeth. I read it a few months ago and finally found it again thanks to a member on the SGAHC list.

Descent
By Elnea
Summary: Members of the Atlantis Expedition are inexplicably losing their sanity, and Rodney makes an interesting discovery under the city.
Spoilers for 38 Minutes, The Eye, Hot Zone, Sanctuary & Before I Sleep