Talk:Logan's Catalyst/@comment-4511886-20130427200543/@comment-667748-20130427201141

It's in the room between the bonfire, and the large yard before the crystal caves.

You have to:
 * 1) Save Logan
 * 2) Find him in his new location
 * 3) Buy all his stuff so he will go crazy
 * 4) Kill him in the Duke's first room
 * 5) Return to the room where you bought all his stuff
 * 6) In the chest where he used to be

There is more info on the Big Hat Logan page itself. Reload to make him move.