Firstly, it was just the prisoners that were used.
Then it became orphans, and even some of the elderly.
Now it is everyone in a society where people are struggling to find work.
Money is offered to anyone willing to volunteer themselves or their children to take part in scientific trials run by the organisation called Calox.
Except no one ever gets the money.
No one is ever seen again once they've volunteered for the trials.
(This is the first book in the 'Children of Calox' series. 'Flames' is the sequel, and therefore the second book in the series. I plan to write between three and five books in total.)