spn_epific all neatly categorized for your enjoyment, just click on the Lucifer Rising episode tag.

You might also want to check out the "Post-S4-schmoop-meme" :)

http://thehighwaywoman.livejournal.com/135416.html

rivestra's Sink Into Stone is a beautifully written episode tag and comes complete with really hot wincest.

DETOX (http://community.livejournal.com/no_candle_mom/56157.html#cutid1)

As the name suggests, it deals with Sam coming off of the demon blood.

WHEN THE END CAME. (http://community.livejournal.com/no_candle_mom/57140.html#cutid1) Sam/Dean Dean/Castiel. Complete in 4 parts.

Summary: When the demon blood took his brother for the second time, Dean’s world comes to an end… again. With no deals to be made, can Castiel convince Dean to go on without Sam?

Warning: Death fic.

Most of my Sam/Dean stuff is locked and you will need to be a member to read. Please join via "user info" and I will add you asap.

Z

I don't normally rec my own fics, but here we go. I have two that take place after the finale.

Faster Than Angels Fly (http://community.livejournal.com/creators_hands/43148.html)
Summary: post 4.22 “Lucifer Rising”- ‘Strong as the beads of a rosary; Never too young to die; Heaven can’t help you if you go; Faster than angels fly.’ Castiel was too late. Warning, it is a death!fic

Hell's Child (http://community.livejournal.com/creators_hands/42916.html)
Summary: post!apocalypse, broken!Sam; A month after Sam goes missing, Dean and Castiel find him, in more ways than one.

Hope these are what you are looking for. Enjoy!

Well, there are a lot!

Two I really like:
The truth is written in the curve of your lips and the bow of your head is a benediction to me (http://memphis86.livejournal.com/210116.html) by memphis86 (Sam/Dean, NC-17)

At the Start of All Things (http://dotfic.livejournal.com/219367.html) by dotfic

and a self-pimp, Coming Untied (http://ariadnes-string.livejournal.com/8096.html)