Former elementary school teacher and detective, Kurasawa Itsuki (Nakatani Miki), has a history with Kishi Ruoto (Kikuchi Fuma). At the age of 12 and her 6th grade student, Kishi murdered Kurasawa's daughter. The young age of the murderer caused the bizarre murder case to send shockwaves throughout Japan. Kurasawa experienced despair and quit her job as a teacher to become a detective with the desire of "saving as many people as possible from suffering like I did".
Driven by her strong conviction, Kurasawa spends 12 years working hard to solve cases before learning that Kishi is to be discharged from a medical reformatory just before the anniversary of her daughter's death. One day, she receives a text message from the supposedly "completely rehabilitated" Kishi promising to "take away your precious things once again". This was the beginning of a new incident that would shock all of Japan again.
Hirai Taro is a writer, who admires detective novels by Conan Doyle, Maurice Leblanc, and Edgar Allan Poe. He tries to get his own novels published, but newspapers and publishing companies show no interest towards his stories. The only person who reads his novels is Murayama Ryuko. They communicate with each other through letters. While writing his novels, Hirai Taro works low paying jobs and lives in poverty. He meets elderly Private Detective Shirai Saburo. Shirai Saburo teams up with Hirai Taro and they do private detective jobs together.
Chen family's puppet show is unique in the world. Liu Xiaoxiao, a female disciple of the Chen family class is starting anew after the fire was caught in class house. She meets Song Keyang, a cartoonist from the future, to uncover the truth of the fire together and solve the mystery of life experience.
After discovering a dead body in the National Museum, Inspector Edib and Mido are called to the crime scene. But the disappearance of the body and the hidden motives of the Museum lead them to a web of corruption and international crime.
The story of experienced and cynical cop Pavel Safronov, who is in a coma, and whose soul has been transferred into a stray dog. The only one who can hear the policeman's voice is his young partner, Lieutenant Slava Kurochka, who has just started his career in the police force. Together with the dog, he will investigate crimes, repeatedly finding himself in comical situations.
Seven teenagers Ashutosh, Raja, Julie, Shiva, Ronnie, Sanjeev and Rahul who battle an evil force that takes the form of a clown called Woh that kidnaps children.
The First Investigation Division of the Metropolitan Police Department, which is based in the Dai-Tokyo Police Station , is headed by Keiichiro Funakoshi, the Chief of the First Investigation Division . This is a department that specializes in considerations that lead to solutions.
Along with Ryu Fujii , a new detective who was newly assigned for some reason , they lead to the solution of many difficult cases one after another while colliding with each other's strengths.
Detective Investigation Files IV (Chinese: 刑事偵緝檔案IV) is the 4th and final installment of the Detective Investigation Files TV franchised by TVB in Hong Kong. It is a complete reboot of the series, with new cast. The series focuses on the lives of two detectives, Tsui Fei (Louis Koo) and Kong Chi Shan (Sunny Chan), and the murder cases they deal with.
A rich family that is believed to be cursed because of the mysterious death of all the men in the family leaving only the women alive. This is the story about how sweet and innocent love flourishes in the middle of harsh tribulations, and how far scarier than a mystical curse is the curse caused by love, greed, anger, and delusion in the human heart.