Circle (TV series)

*Circle*
Circle
	Promotional poster
Hangul	써클: 이어진 두 세계
Literal meaning	Circle: Two Worlds Connected
Revised Romanization	Sseokeul: Ieojin Du Segye
Genre	Science fiction; Dystopian fiction; Mystery; Thriller;
Created by	Lee Myung-han
Written by	Kim Jin-hee; Yoo Hye-mi; Ryu Moon-sang; Park Eun-mi;
Directed by	Min Jin-ki
Creative directors	Jun Min-ho; Noh Jung-hoon; Park Hyung-won; Wi Sung-yun; Kim Geum-nan;
Starring	Yeo Jin-goo; Kim Kang-woo; Gong Seung-yeon; Lee Gi-kwang;
Theme music composer	1601
Ending theme	"Alive" by UJi feat. Andup
Composer	Kim Soo-jin
Country of origin	South Korea
Original language	Korean
No. of episodes	12
Production
Executive producer	Park Sung-jae
Producers	Choi Jin-hee; Jang Jin-wook;
Cinematography	Choi Sung-tae; Park Sung-young;
Editors	Na Hee-soo; Jung Mi-sook;
Camera setup	Single-camera setup
Running time	60 minutes
Production companies	tvN; Studio Dragon; KPJ Corporation;
Original release
Network	tvN
Release	May 22 –; June 27, 2017
	Infobox instructions (only shown in preview)

Circle^[1] (Korean: 써클: 이어진 두 세계) is a 2017 South Korean science fiction television series starring Yeo Jin-goo, Kim Kang-woo, Gong Seung-yeon, and Lee Gi-kwang. The series features two parallel plots set in the years 2017 and 2037, both centered on twin brothers' struggle with the discovery and development of an advanced alien technology that could either be a boon or bane for the entire human race.

It aired on tvN for 12 episodes at 23:00 KST on Mondays and Tuesdays from May 22 to June 27, 2017.^[2]^[3]^[4]