Inspector (3rd year), Total career 12 years (Most senior) Male Object-specialized ability Star, Police patrol car, Lockpick, Coffee, Disassembly, Pistol, Wrench 30 years old INTP Ability: Mechanic Described as a mechanic, but in practice, it is closer to manual dexterity and handling objects in general. His primary role in the investigation process is obtaining clues through interaction with inanimate objects. The scope of his ability is the widest among all detectives, but the depth of each is somewhat shallow. Compared to other detectives who specialize in one professional field, he is an all-rounder who feels like a combination of slight specialization and several downgraded versions of other abilities. Additionally, he is the only detective with excellent knowledge and utilization of firearms and information devices. [Weakness] As a common weakness of such all-rounder abilities, the scope of use is very wide, but paradoxically, the direction of utilization is narrow and the expertise is low.

Inspector (3rd year), Total career 10 years Male People-specialized Rabbit, Notebook for notes, Microphone, Mask, Camera 29 years old ENFP Ability: Eloquence Literally an investigative ability specialized in conversation and dialogue with NPCs (suspects, witnesses). Therefore, unlike Gakbyeol, he has zero interaction with the scene or objects. In addition to being a good speaker, his background as a psychology major often allows him to grasp or manipulate a person's psychology and emotions. His lines are also written in a more empathetic and persuasive style than other detectives. [Weakness] There are several critical problems with this ability. First, if the target refuses to talk, the ability itself becomes impossible to use. Especially if the target is too young or there is a significant power gap, he cannot continue the conversation without decisive clues, and the ability only draws conclusions based on the current state. Second, he is vulnerable to field investigations. Since his ability to investigate objects is low, it is very difficult for him to find crime scenes or hidden clues. Naturally, coordination with other detectives' abilities is not easy, so in the latter half of the investigation where everyone starts to group up, he is often seen wandering alone.

Sergeant (3rd year), Total career 8 years Male Physical-based Shark, Demolition hammer, Handcuffs, Motorcycle 23 years old ESFP Ability: Action Leader More precisely, like a cliché hot-blooded detective, his physical abilities and mental strength are quite outstanding. He can excel in interactions involving the entire body, and in addition to physical applications, he can exert threats or infer information such as physique based on physical knowledge. Thanks to this, when there are no detectives specializing in scene analysis, he can at least briefly grasp the condition of a corpse. [Weakness] Rather's ability ultimately requires a clear target or object to perform physical actions. He tends to be less active when the culprit is not revealed and he has to deal with a large number of civilian witnesses, or when he needs to analyze a vague flow of events rather than individual units.

Sergeant (3rd year), Total career 7 years Male Knowledge-based Dinosaur, Encyclopedia, Cookie, Brainiac 23 years old ESTP Ability: Encyclopedia The exact principle has been revealed; it is not the concept of an electronic dictionary that brings up desired information like a real encyclopedia, but a type of hyperthymesia that brings out information Gongryong has seen somewhere. Unlike other detectives, it can be used anytime, anywhere, without restricted locations or targets. If there is information about the target to be investigated, he obtains it; if not, only trivial knowledge appears.

Officer (5th year), Total career 6 years (Youngest) Male Non-existent-based Puppy, Eyes, Backpack, S.O.S Fanboy 21 years old INFP Ability: Sixth Sense He possesses outstanding five senses and spiritual powers. Among the other detectives whose abilities are closer to talents, he is the only one who possesses an ability closer to a true supernatural power. However, except for abilities utilizing the five senses, nothing happens under his own control. [Weakness] Because it relies on unclear senses and spiritual supernatural phenomena, it cannot be definitive physical evidence. No matter how much he realizes the causal relationship of an event, the words spoken by Deokgae's senses have never been presented as clues or rebuttal materials. Also, even if he finds out the conclusion of a case, the intermediate process of the investigation must be solved manually.

Inspector (7th year), Team Leader of Mystery Investigation Unit Female Real-based Whale, Trust evaluation notebook, Lectern, Puzzle, Profiling 24 years old ISTJ Ability: Profiler Analyzes and reasons through crime scenes, analyzes differences in surrounding situations, and obtains numerous clues and physical evidence from the scene where the incident occurred. [Weakness] Due to the nature of the ability to investigate differences in spaces or minute gaps where an incident occurred, the moments for using it are somewhat limited. It is often at the beginning of a chapter when first encountering the crime scene, at the end when the reasoning about the culprit must be finalized, or at the very end when a contradiction is discovered and the case is overturned.