Forget the dark tension of Mad Concrete Dreams! A new behind-the-scenes look reveals the tvN thriller’s set is actually pure sunshine.

Ha Jung Woo and Im Soo Jung anchor a supportive, electric cast. Krystal earns massive praise for mastering intricate sign language.

Witness the camaraderie fueling this gripping crime saga. Catch the next pulse-pounding episode on April 4th via Viki!