Two survivors, who appear unwilling to answer questions, are the only links authorities have to a spate of attacks that have hit rural South Africa.

Four participants sign up for a mysterious medical test.

A dangerous CIA renegade resurfaces after a decade on the run. When the safe house he's remanded to is attacked by mercenaries, a rookie operative escapes with him. Now, the unlikely allies must stay alive long enough to uncover who wants them dead.

Long before she was a single mother in a sleepy South African town, Jessica Brok was a highly skilled, coldblooded, special ops assassin. She thought she’d left that life behind. She thought her last ill-fated mission was her last. She thought wrong.