The prison authorities must certainly have known they were in custody of one of the most important detainees in the past 30 years. Therefore, what instructions were given those subordinates in charge of his custody? I have not heard any report on this.
He operated what authorities believe was a sex trafficking operation involving underage girls and prominent individuals, including the elite from politics, Hollywood and business.
These were all young women involved, apparently. Were they specifically chosen to be underage for blackmailing purposes? Very few men will knowingly have sex with an underage girl.
Were recording devices/cameras etc. found at Epstein's facilities?
I honestly believe that 99.9% of the billionaire and hundred millionaire set are chosen. Very few people have the innate ability to create a billion dollar fortune on their own, so they are chosen. It almost always takes government connections to make these outsized fortunes, so corruptible people are chosen. They are promised the world, if they comply. They are also promised personal ruin if they resist.