“Undercover” is a BBC series that aired in 2016 and follows the story of a British lawyer in a long-term legal battle to prove the innocence of a man on death row in the U.S., while her husband’s past comes back to haunt him and he does whatever he can to hide it. The Korean remake is set to be directed by Song Hyun Wook, who has worked on hit dramas like “Another Oh Hae Young” and “Beauty Inside.”