Set in London, each episode is a self-contained story, starting with a news report, then following the team of three detectives as they investigate the circumstances the crime. The cases themselves are hard-hitting with contemporary themes, such as the search for a soldier with PTSD, a murder that has been made to look like an assisted suicide and the gang rape of a young teenager.
An explosion happens and body parts are scattered. As a result "Sebbe" is taken in for questioning by the city police, but time is short since Interpol and FBI wants him to be handed over to them.
Detective Yoon Cheo-yong was born with the supernatural ability to see, hear and touch ghosts. He solves mysterious, unsolved cases along with tough and passionate colleague Ha Sun-woo, and Han Na-young, the ghost of a high school girl.
An Intelligence Agent is sent to El Principe, on the border with Morocco, to investigate a possible police collaboration with a terrorist cell but finds unexpected love in the least suitable person: a drug baron's sister.
The day-to-day life of two unwilling partners of the Montreal Police Department, Officers Nick Barron and Ben Chartier. These two beat cops patrol the urban sprawl of downtown's 19th district, in cruiser No. 2. 19-2 is about the tensions and bonds that develop between two incompatible men of very different temperaments and life experiences. Over time, Nick and Ben's mistrust and antagonism for each other give way to moments of mutual respect and a wavering chance at a true partnership.
In the west of Paris, strange murders are committed. The victims are eviscerated before being arranged in a macabre display. While discovering one of the victim, Police commander Eric Lanester loses his sight... as well as the control of the case. But with help of a young woman taxi driver, the cop nevertheless continues his investigation.
An ex-detective, Kagawa, is found dead in a park in Shinjuku, Tokyo. Swearing revenge, detectives of the #1 investigation team, including Tozawa (Shosuke Tanihara), begin to investigate Kagawa’s death. Meanwhile, Sono (Masanobu Takashima), at the public security bureau, orders his subordinate Shimizu (Taizo Harada), to uncover the truth behind the case in secret. Sono believes the maintenance of trust held by the general public for the police could be jeopardized if anything afoul is discovered in the case stemming from the police. Sono wants to coverup the case as unsolved if the police are involved.
Akemi Ninomiya is a hardcore mystery fan. Although she is only a college student, she is wealthy and owns a building. Private Detective Morio Ukai prefers tracking down lost pets for wealthy clients rather than murder cases which brings in little money. The duo join forces to solve various suspicious cases.
Popular actor M. Jampolskis plays the main role of Andrius Mažylis, a small town police inspector. In the film, the policeman is accompanied everywhere by his service German shepherd named Mažylis. After returning to his hometown to work with the dog after several years spent at the police academy, Andrius finds a very changed environment: now everything is ruled by criminals and corrupt local officials. A. Mažylis and his namesake dog will have to work hard to restore order and peace to his hometown.
Assistant Inspector Fukuie does not look like an assistant inspector but once she starts an investigation, she takes no notice of anyone as she searches for the key to find out the truth. She does not care for the hierarchical relationship of the organisation or career advancement. If she has doubts, she will not listen to her superior and will persist in investigating to the end. Fukuie’s boss Inspector Ishimatsu is completely different from her. He places importance on the organisation and discipline, is rigid and strait-laced. Ever since Fukuie became his subordinate, his pride has been in tatters because she loves to disregard his instructions and investigate on her own even though this eventually results in success and he gets credit for her achievements. His principle is to investigate using orthodox methods, but the results that Fukuie delivers goes against this and makes him feel ashamed.