No, this was a full-on Secret Murder Cult, with robes and a huge Aztec staircase and all that you could ask for in an evil, quasi-religious force. I don't remember how I got wrapped up in it, as I am not usually prone to murder, but here's how it worked: the facilities were billed as a retreat for the sick and dying, who would come and stay for a few days, get the whole shebang in terms of rituals and invocations, and eventually get brought to the top of this long, long staircase wherein they would be murdered. Men, women, children - everyone went under the knife eventually. And, of course, I helped.
Maybe it was because everyone seemed so sick and miserable that I thought, "Well, they're going to die anyway, so as long as their deaths serve our nefarious purposes I suppose that's all right. If I was sure what our nefarious purposes were...." Looking back on it, one thing I find interesting was the mixture of religious iconography that my brain threw together. The heads of the cult wore robes that resembled the brown robes of the Franciscans, but during ceremonial duties also wore the traditional Arab keffiyeh and spoke Hebrew.  The facilities had a distinctly Catholic look to them, except for the huge stone pyramid out back with the blood gutters. Not a traditional aspect of Catholic architecture, unless I missed something in CCD class.
The last group to come through before my cat woke me up  was from Africa. Their party consisted of a few morbidly obese, terminally ill, and fantastically rich people and their families. It was a big group, and I remember thinking, "This isn't going to work." We couldn't let any of them live, after all. That would undermine the "secret" part of our secret murder cult.
And while I tried to work out the logistics of disposing of forty or fifty people, it started to bother me on a more moral level. The few sick people looked up at me when I passed with great hope, as though they really thought we were going to help them. Their families were excited by the prospect of a cure, in some cases actually dancing and talking about how much better their loved ones would be. Which is when it started to dawn on me that maybe - just maybe - mass murder was wrong.
But how to get out of it? I had helped, after all. If I went to the head of the cult and told him I was having doubts, I knew he would either be able to sweet-talk or threaten me into staying. I knew that if I ran under cover of darkness to the police, I would be just as indictable as everyone else, and likely spend the rest of my life in prison. I was still searching for a way out when my cat gently clawed me awake and I thought, "I dreamed I was in a cult...."
Of course, one would be tempted to wonder what this says about me, that my dream-self would have to eventually work his way to the conclusion that murdering people who had come to you for help is wrong. Damned if I know what it means, other than that my brain has too much time on its hands.
 Do they still do that? I imagine Homeland Security would probably take a dim view to that in this day and age.
 Or at least what my brain thinks Hebrew sounds like.
 With his usual unerring accuracy at 5:00 AM. On my day off. Bastard.