S1 • E1
Seol Ok, who dreams of becoming a detective, has become a mentor for a new police chief, but must hide it from her nosy mother-in-law, who believes she's having an affair.
S1 • E2
Detective Ha Wan Seung's arrest of gang boss Jang Do Jang backfires when a lawyer brings his methods into question. Seol Ok's startling experience doesn't stop her investigating.
S1 • E3
Seol Ok insists that a robbery case is actually a murder. Detective Ha, however reluctantly, is convinced to let her help him.
S1 • E4
Seol Ok believes the murderer is still at large, despite a confession given to the police, and makes a deal with Detective Ha.
S1 • E5
Midnight is quickly approaching, but Seol Ok is determined to catch the culprit in time, despite Detective Ha's doubts.
S1 • E6
The Violent Crime Unit is transferred to Robbery-Homicide, but Detective Ha refuses to stop going after Jang Do Jang. Seol Ok tackles a mystery in her house instead of on the streets.
S1 • E7
Detective Ha, pursued by his fiancée-to-be, helps Seol Ok track down her sister-in-law so she will be willing to testify against Jang Do Jang.
S1 • E8
As Seol Ok continues to trail Noh Doo Gil, she becomes separated from Detective Ha. Jung Ji Won makes a surprising request.
S1 • E9
Detective Ha is about to be reinstated at Seodong, but worries that Seol Ok's testimony will put her in danger. Ho Chul orders Jang Do Jang be released again.
S1 • E10
Detective Ha and his team are excited to be part of a special unit, but realize their expectations were too high. Seol Ok is spurred into action by Joo Hyun's death.
S1 • E11
After Seol Ok disagrees with Inspector Woo about Joo Hyun's case, she starts to investigate with Detective Ha and his colleagues.
S1 • E12
Seol Ok and Detective Ha clash with Inspector Woo and his team when everyone goes after the Tape Serial Murderer.
S1 • E13
Seol Ok is excited to celebrate her wedding anniversary, but finds out that a case she turns down involves her mother-in-law. Jung Sang Won goes behind his sister's back to CEO Ha.
S1 • E14
Ji Won gives Detective Ha evidence of Hyun Soo's death, but he refuses to believe it. Seol Ok's marriage continues to implode.
S1 • E15
Seol Ok and Detective Ha start to unravel the connection between their loved ones' deaths, but have to find Jang Do Jang's real murderer first.
S1 • E16
Detective Ha believes he's found out what really happened to Hyun Soo, but cannot go after the perpetuators by himself.
Kim Kyung-Mi
Yoo Seol-Ok
Ha Wan-Seung
Profiler Woo
Jung Hee-Yeon
Gye Sung-Woo
Crime Department Chief Jo
Ha Ji-Seung
Detective Bae
Kim Ho-Soon