Main cast •
Kim Ah-joong as Jung Hye-in – 35-year-old, actress •
Ji Hyun-woo as Cha Seung-in – 33-year-old, detective of Kangnam Police station's homicide investigation team •
Uhm Tae-woong as Shin Dong-wook – 38-year-old, "Jung Hye-in's Wanted" PD •
Park Hae-joon as Song Jeong-ho – 42-year-old, Hye-in's husband, UCN's CEO
Broadcast production member •
Lee Moon-sik as Choi Joon-goo – 48-year-old, Head of UCN Drama Bureau, "Wanted" executive producer •
Park Hyo-joo as Yeon Woo-shin – 35-year-old, freelance broadcasting writer •
Jun Hyo-seong as Park Bo-yeon – 26-year-old, assistant director
Investigation team •
Shin Jae-ha as Lee Young-gwan – 27-year-old, Kangnam Police station's homicide investigation team newcomer, Seung-in's partner •
Kim Sun-young as Oh Mi-ok – 39-year-old, profiler, inspector of Police Hall's crime information support section •
Kim Byeong-ok as Jung Jung-ki – 54-year-old, Kangnam Police station's homicide investigation team leader • as Park Young-sik – 38-year-old, detective of Kangnam Police station's homicide investigation team • as Yoo Dong-joon – 31-year-old, detective of Kangnam Police station's homicide investigation team
People around Jung Hye-in •
Bae Yoo-ram as Kwon Kyung-hoon – 25-year-old, Hye-in's manager •
Lee Seung-joon as Jang Jin-woong – 36-year-old, internet entertainment show "Star Live" reporter • as Ham Tae-seop – SG Group CEO, Tae-young's older brother • as Song Hyun-woo – 7-year-old, Jeong-ho and Hye-in's son
Events and mission-related people • as Park Se-hyung – Hyun-woo kidnap's suspect •
Shim Eun-woo as Lee Ji-eun – BJ • as Kim Woo-jin – teacher, Han-sol's father (first mission) •
Kim Ye-jun as Kim Han-sol – child found in the car trunk (first mission) • as Ha Dong-min – Soo Jeong Hospital's Head of Pediatrics (second mission) • as Kim Sang-mi – Soo Jeong Hospital nurse (second mission) • N/A as Kim Hae-joo – people who solicited the killing of Kim Sang-mi (second mission) •
Park Sang-wook as Jo Nam-cheol – old hand • Choo Gyo-jin as Im Hyung-soon – people who was killed by Jo Nam-cheol • Ahn Soo-bin as Kim Yang-hee – Jo Nam-cheol's girlfriend •
Seo Hyun-chul as Kim Sang-sik – Jo Seung-in's police senior • as Na Soo-hyun – coffee shop's part-time staff • as Go Hyung-joon – detective investigating the disappearance of Na Jae-hyun • as Moon Sung-hyuk • as Lee Yong-hwan – Lee Ji-eun's father • as Lee Tae-gyun – Police Hall chief • as Kim So-hyun – Song Jeong-ho's lady •
Baek Seung-hyeon as Choi Pil-gyu – lawyer • as Ham Tae-young – Jung Hye-in's deceased husband, Hyun-woo's biological father
Extended cast • as Kim Hong-joon – director of film "Mother" in which starred Jung Hye-in • as Broadcasting PD – successor PD of the program directed by Shin Dong-wook • as talk show "Kiss and Talk" PD •
Kim Sung-kyung as talk show "Kiss and Talk" MC •
Joo Woo-jae as talk show "Kiss and Talk" guest •
Hwang Young-hee as internet entertainment show "Star Live" editor-in-chief • Yeo Woon-bok as debate program's police panelist • as Cha Seung-in's father • Shin Young-jin as autopsy responsibility • Kang Chan-yang as nurse • as Na Young-hyun – Na Soo-hyun's younger sister •
Oh Hee-joon as Pierrot • Kim Min-sang as Kaepko • Kang Heon as convenience store's customer •
Song Young-gyu • • as Police Hall deputy • as Kim Sang-oh – Ham Tae-seop's lawyer • Sung Min-soo as Kang Young-min – Internal Affairs Department's police officer • •
Kim Ji-eun as Nurse ==Ratings==