In the USSR, political prisoners who were scientists were not always sent to GULAG, but also to The First Circle (named after Dante's Inferno), a special incarceration unit near Moscow where they could work for the government.
Innokenty Volodin
Stalin
Viktor Abakumov
Gleb Nershin
Lew Rubin
Nikolaj Schtschagow
Wladimir Tschelnow
Clara Makaraguine
Major Shikin
'Ruska' Rostislav