Four seasoned killers and one hapless professor are rounded up in one violent swoop and awake in chains to discover they are part of a demented experiment orchestrated by their maniacal, mysterious captor. Andrew Bongiorno, Manu Intiraymi, Natassia Halabi, Dominic Pace, Erica Manni, Alena Savostikova, Mike Ferguson Added on Amazon Prime 2021-08-21.