That sounds familiar (although I think I remember the character of Dr. Langdon). I read a lot of mc stories, though. You might try the Erotic Mind Control Story Archive (mcstories.com); I usually get to that story archive through ASSTR. Check out the Collections page at asstr.org.
Let me know if you want me to help you search, but I'm almost positive that Simon has it archived there.
Lori...
