"The Warriors of Greece shall never tire, and shall return our motherland to its proper place as the light of the world, and us to our place as the master race in this time of restlessness and walking death!"rn-Official Peloponnesian Superiority Party propaganda
A secret MLM (pyramid) company that offers eternal life, but in fact it transfers the life forces of its members to those position "above". If you get high enough, (meaning you get enough new members) you start to enjoy the benefits. Maybe a willing sacrifice is much more effective for the transfer. But no one says, that a suddenly unwilling member, threatening to tell the authorities, may not loose it involuntarily... thus start people to vanish, and aged corpses are deposited somewhere safe.