A young woman named Deniz Bayraktar is found brutally murdered in her home. On the other hand, a man's body is found at the bottom of the cliff. Barış, Adem, Ayşe and Volkan will soon realize that this case is much more than an ordinary case. The series is getting off to a good start with its surprising and confusing story.

A woman's body is found in the forest. The woman was killed by an arrow from the crossbow and her body was left in a place where it can be easily found. The team notices that this case is very similar to a murder committed in the past.

Ertemoğlu family is brutally murdered on one of their happiest days. Hande, the eldest daughter of the house, is shocked by the killing of her mother, father and sister. On the other hand, Perihan, who is mentally unstable, is also left alive.

A little girl, 5-year-old named Peri, is kidnapped from the kindergarten. Her grandfather Refik, the former police chief, asks the teams' help. On the other hand, mother İpek also intends to do everything to find her daughter.

3 people working in a night club were strangled to death. Only blind singer Leyla and other singer Sezgin survived.

The body of a young girl named Aleyna is found on Kilyos Beach. The interesting thing is that she is 4-week pregnant and the day she died is her birthday. In the season final we are witnessing the last day of Aleyna.

The first episode of the second series, is about to solve a double murder which includes story of Syrian immigrants and human traffickers.

The body of a police officer, Ekrem found in a dumpster, in Tarlabaşı. When Cumali finds out that his closest friend Ekrem is dead, he fall apart and will not rest until he finds the killer.

Three people from the same family were brutally murdered in a villa. Mehmet, whose life is ruined because of his gamble addiction is considered to be the murderer.

Two female bodies are found in a luxury vehicle by the lake. Begum, one of the victims, is a successful doctor, and Elif is a escort.

A red suitcase with bones inside is located in a dam after the tied. After the investication, it is determined that the bones belong to a young girl. Ersin, who learned the incident, suspects that the bones from the suitcase may belong to his wife, who disappeared 6 months before the incident.

Aydos forest, 2 dead on the back. In the situation where the body was found, Ecrin Ayçiçek is the personality of a young girl. The only evidence at hand is this identity card. Our team will go after Ecrin to search. A little surprise awaits. What kind of relationship is there between the unknown corpse and Ecrin? As Baris, Hakan and Zeynep deepen the investigation, they get sick, unexpectedly.

Famous crime writer Selçuk Günes was thrown from the terrace of Günes Apartment, where he lived, and his assistant Melisa Soyer was stabbed in the back. No one enters and leaves the apartment; The killer is an insider. Selçuk Günes's younger son Mahir, who is burning with dreams of becoming an actor, his elder son Deniz, a gambler, Hako the doorkeeper of the apartment, Fotini, the Greek fortune teller and Sermin, who live in the entrance flat, are the suspects. As the research deepens, the secrets of the people living in the apartment and the ghosts in their past will be revealed one by one.

In a park in one of the most decent districts of Istanbul, the body of a young high school student studying at a private college is found. The death of Defne, the only child of Hikmet Denizoglu, a wealthy businessman, deeply shakes her schoolmates, especially her father. The brutal murder has filled the entire city with fear and anxiety. While our team tries to calm the chaos after the murder, they also try to solve the murder. Now there is only one question; Who killed the young girl so brutally? As our team begins to solve the murder, they work their way to a surprising ending.

Our team is faced with an extraordinary murder. Ayla Saritas was killed by having her heart ripped out. Right after the incident, Ayla's sister, Canan, comes and confesses that she committed the murder herself. So is the murderer really Canan? While the suspects emerging around a passionate love are dragged in a whirlpool of betrayal and jealousy, as the investigation deepens, it is revealed that everyone has a reckoning with Ayla. Our team, following the evidence, finds themselves in a maze of emotions, intertwined with each other. The exit from this labyrinth will not be easy.

University research assistant Prof. Dr. Sinan Demirhan is attacked at home with his family. There are coded messages written in blood at the crime scene. While his wife and daughter died, the professor, who survived the attack with serious injuries, is put to sleep in the intensive care unit. While trying to decipher the codes with the help of a cryptology expert from Tübitak, the special unit cops find themselves in the middle of an incredible conspiracy when they learn that the professor is working on a vehicle prototype that runs on his own energy. Who attacked the professor and his family and why? Was the attack orchestrated to steal the prototype the professor had developed? Are there foreign agents in your business? While Zeynep and Hakan are trying to solve this mysterious case, the investigation gets even more interesting when an extraordinary chief is assigned to the special unit.

An elderly woman who comes to the police station with a man in a wheelchair confesses to killing the man sitting in the wheelchair. Realizing that the old man is really dead, the police report the murder to the special unit. Our cops are dragged into a tough game to find out the identity of both the dead man and the woman. Although the old woman wears out the nerves of our team with this game, the woman's plan is not just that. As the team investigates the old man's murder, they come across a more terrifying and gruesome truth.

Kerim Savaş, who married the daughter of one of the richest people in Turkey, is found dead in his house shortly after the wedding. After the investigation, it is understood that the new groom was killed. Although the police have a large list of suspects, there is not the slightest evidence of the crime, while the special unit cops are having a hard time getting out of the business, and a second murder is committed.