Summary
As the team discovers the truths behind a mysterious organization, they question whether one of their very own could be hiding a dark identity.
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With old faces back on the team, the detectives investigate a series of bewildering cases that seem to be linked to a shady organization.
With old faces back on the team, the detectives investigate a series of bewildering cases that seem to be linked to a shady organization.
As the team discovers the truths behind a mysterious organization, they question whether one of their very own could be hiding a dark identity.
A client in need of finding a lost boyfriend contacts the team for help, but they're not the only squad of private eyes who show up to take the case.
After receiving a strange letter from a dead man, the detectives look for answers in his hometown - and from his four suspicious friends.
Following clues from a chilling message and a mysterious USB drive, the team races against time to save a hostage from being killed.
With three women claiming to be his rightful fiancée, a wealthy heir calls on the detectives to deduce which he should marry.
Investigating the disappearance of a woman's corpse from the morgue, the sleuths encounter a deadly operation with disturbing plans.
The team splits up to take on two cases: one involving a missing professor, and the other a gory murder inside an illegal gambling den.
Kwang-soo is back! When a client asks the detectives to uncover which of his roommates is stealing his food, they enter a house filled with secrets.
Amateur detectives attempt to untangle a string of mystifying cases, which may be connected to an enigmatic figure known as the Flower Killer.
Amateur detectives attempt to untangle a string of mystifying cases, which may be connected to an enigmatic figure known as the Flower Killer.
Hot on the Flower Killer's trail, the detectives follow a maze of clues from his home to his secret lair, where they learn a shocking truth.
Eager for more information about the Flower Killer, the team attends an event, where the detectives come across an unexpected death.
The detectives have fun participating in a crime game show with a K-pop group -- until things get too real.
The detectives split up when they're hired by three estranged brothers of a chaebol family -- all eager to find their late father's will.
While investigating a suicide, the detectives go to a spooky village, where mysterious things happen to young women -- and outsiders are not welcome.
The team welcomes a new intern, who leads them to a grisly case involving a divorced couple, their son, and a suspicious neighbor who lives next door.
When a shaman needs help finding the scattered numbers of a winning lottery ticket, the detectives race against another team for a big reward.
Hired by a client whose family jewels are in danger of being stolen by a nefarious thief, the detectives hurry to get to it first.
The search for K's killer gets complicated when a series of dead bodies are found -- all with a mysterious QR code on them.
Trapped in individual rooms filled with a variety of challenges, each detective tries to figure out how to escape.
Tackling different mysteries in each episode of this game show, seven sleuths get closer to solving the biggest one of all: What happened to Project D?
Tackling different mysteries in each episode of this game show, seven sleuths get closer to solving the biggest one of all: What happened to Project D?
The detectives receive a text message from K that was written three months ago. It asks them to come to Incheon, where their final test awaits.
A culprit asks specifically for the detectives to escort him to the police station. In exchange, he promises to tell them everything they want to know.
A man who introduces himself as K's old friend offers the detectives lavish pay and a chance to partake in a special mission -- but there's a catch.
Without any cases to solve, the detectives enjoy watching a magic show rehearsal -- until the show's star magician suddenly disappears without a trace.
To find the missing self-portrait of a recently deceased painter, two rival curators at a Seoul art museum each commission a team of detectives.
A woman turns up dead on an island off the coast of Incheon. The detectives learn that a centuries-old legend of a vampire has haunted the islanders.
Jong-min comes across a diary of a dead teen girl who was possibly murdered. To find the truth, he gathers the detectives at the school she attended.
While enjoying their break on Jeju Island, the detectives get a shocking call from K, who says Kwang-soo is a prime murder suspect and is on the run.
Recognized for their performance, the detectives report to Jeju Island, where their first client asks them to participate in a treasure hunt.
A man named "M" invites seven people to a murder game party. Among the eight in the room, one will become a victim, and another the culprit.
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