When it kicked off in late July, high-society action-thriller Adamas wooed us with an intriguing set-up and its mysterious title. In the show, Adamas is a diamond-encrusted arrow heirloom of Haesong Group chairman Kwon Jae-kyu (Lee Kyoung-young) that becomes the weapon used in a murder. The victim is the father of twin brothers Ha Woo-shin – an author – and.