In my world there two kinds of prisons:
Nearly all of the prisons follows the same rules, which are quite similar to nowadays Earth prisons. Run by a government's agency, where prisoners are fed, can read, walk around designated area, can be visited from time to time, can receive packs and send letters, some of them even have access to a computer and the Internet etc.
There is one, very specific prison. Run by a private company, not working or even existing legally (run thanks to a lot of money sent to a lot of people in form of bribes), not widely known (actually, you can't find virtually any information about it, neither in the Internet nor in the news, if you don't know for what and in where to look for -- hidden by a facade of nursing home) where prisoners are kept under very strict rules that summarizes to "no contact with outer world" or even actually disappears (can't send or receive any kind of communication, can't be visited by anyone, neither from the family or government and can't be released -- getting there is a one-way ticket).
Now, I have a prisoner (one or more), a very bad personae (series killer or similar sort, sentenced to life-sentence etc.) that is now in the "regular" prison and I want him/her to be moved to that "special" prison. But, due to above-described conditions and circumstances, I want to do this:
- the way, no one would object or ask questions -- neither "roommates". nor family, any "regular" prison employee, some newsagent, member of the government or some organization... no one,
- the way that brings the least attention that it is possible to bring,
- the way, it is kept in maximum possible secret.
For the sake of the story and question, we may assume that transferred suspect:
- can be both conscious and fully aware of the fact that he/she is being transferred to another prison or
- can be completely unconscious, falling asleep in prison A and waking in prison B.
Once prisoner is transferred to the destination ("special" prison), it will be rendered completely powerless, helpless and even unconscious. It will be connected to a device / system that will lure him into another reality. For this reason, he/she will never seek any way of freedom or escape or even any attempt of contacting "the outer world". Because it will be kept till the end of his/her life lured that there is no outer world.
For these reasons this "special" prison does not need anything special for preventing prisoners from escaping, like heavy guarding etc. They will be kept in secret (i.e. in basement, underground) only to hide them from possible visitors from the outer world, not to prevent prisoners from escaping. Because they will not be willing to escape (and not be even aware that any kind of escape is possible).
What options do I have? How to prepare my world and the organization that runs this special kind of prison. Whom should I pay (if anyone) and how much? What other preparations I must do in order to be able to keep such "transferring" process to run as smudge as possible and keep it in the deepest secret in the same time?
This isn't a one-time operation, but a regular process that will involve some plans / plots, ideas, devices etc., and will be repeated many times, in many countries -- that's why I am asking here (i.e. how to prepare my world for such process, especially that it must be kept in a maximum secret) and not in story building (where I could ask about one, single occurrence of such transfer).
For the simplicity of possible answers, let's assume that the entire world is democratic, like the USA and other really democratic countries in our world.
A fellow-question to this one.