Desc: Bài Kiểm Tra Bí Ẩn: Directed by Stuart Hazeldine. With Adar Beck, Gemma Chan, Nathalie Cox, John Lloyd Fillingham. Eight candidates for a highly desirable corporate job are locked together in an exam room and given a final test with just one seemingly simple question. However, it doesn't take long for confusion to ensue and tensions to unravel.