Flower of Evil is a South Korean television series starring Lee Joon-gi, Moon Chae-won, Jang Hee-jin, and Seo Hyun-woo. It aired on tvN every Wednesday and Thursday from July 29 to September 23, 2020, and streamed internationally on Netflix, iQIYI, Viki and ViuTV with multi-languages subtitles. Lee and Moon have previously starred in Criminal Minds, and it was Lee's return to television after two years.

Lee Joon-gi is a South Korean actor, singer, also a writer, dancer, and model. He rose to fame on his first leading role playing a clown in the critically acclaimed film The King and the Clown (2005) and gained further recognition in the romantic comedy My Girl (2005−06). Since then, he has diversified into other genres such as historical dramas (sageuk) and action thrillers. He is also known for his roles in Iljimae (2008), Arang and the Magistrate (2012), Moon Lovers: Scarlet Heart Ryeo (2016), Lawless Lawyer (2018), and Flower of Evil (2020).