How to do "Brainbite (Evil)" quest?

[Nefarum]

I'm trying to complete the Brain Bite quest for the Conussion spell listed here:

http://wiki.project1999.com/Brain_Bite_%28Evil%29

I'm having a problem with the hand-in to the human skeleton in City of Mist. I've tried it 3 times:

- The first time he agro'd me and then I handed in, got nothing back. Apparently this shouldn't work, so my bad.
- On the wiki it says to do the hand in from around the corner and that should work, so I tried that. I put on invis-undead, then handed in from around the corner. The full hand in happened, then he agro'd me after. Got nothing back.
- Someone else in the zone told me that the corner hand-in doesn't work on p99, I need to charm the mob. So I brought my Necro friend to charm the skeleton, and did the hand-in while he was charmed. Still nothing.

I've made sure I hand in the correct bottle each time (Mardon). Is this quest bugged? Or am I doing something wrong?

Thanks