Season 1

The first season of the show was consisted of 10 episodes. The first episode aired on May 4, 2018 and the last episode was aired on June 1, 2018.

Episodes

 * Forewarned Murder
 * Treasure Island
 * Kwangsoo, a Murderer
 * Messages from the Dead
 * The Last Vampire
 * Battle of the Detectives
 * The Vanished Magician
 * Operation: Criminal Transport
 * The Disappearance of K

Cast

 * Yoo Jaesuk (character)
 * Ahn Jaewook (character)
 * Lee Kwangsoo (character)
 * Kim Jongmin
 * Park Minyoung
 * Oh Sehun
 * Kim Sejeong

Trivia

 * On every episode, a member will always be seen getting involved into someone who is involved in the case.
 * Yoo Jaesuk was given a tarot card by a gypsy hired by Yoo Yeonseok forewarning them on a murder in Forewarned Murder.
 * Park Minyoung bumped to a guy while walking on Treasure Island which was involved in the case.
 * Lee Kwangsoo was seen having drinks with his friends which he was later framed for a murder in Kwangsoo, a Murderer.
 * Kim Jongmin encountered a kid while doing a part time job where he gave him a diary of a girl who was recently murdered in Messages from the Dead.
 * Ahn Jaewook was seen talking to an ex-criminal who asked for his help when a woman from his hometown was murdered in The Last Vampire.
 * Oh Sehun was practicing for an opening number on a show when he witnessed the altercation between two magicians in The Vanished Magician.
 * Kim Sejeong was seen leaving flowers for M, who was murdered in Forewarned Murder on the last scene of The Mysterious Gentleman and the first scene of Operation: Criminal Transport.