Seven people mysteriously win a free vacation. On the way to their destination, the plane has engine trouble and they are left abandoned in a remote seaside location. They find shelter in a large mansion inhabited by a comical butler Angalamma. One by one, they are murdered and the remaining vacationers try to figure out why they were chosen for the trip and what they have in common.
A murder-mystery, that revolves around a family friend of a wealthy, elderly couple, who tries to reconcile things between the couple, and their estranged relatives.
On a rainy night, Anand, a doctor, drops a mysterious woman at a cemetery and later discovers that she is dead. When he gets married, he realises that his wife looks exactly like the dead woman.
Latha, a wealthy socialite, is married to Vijaykumar, an ex-tennis player. After spotting his wife with another man, Vijaykumar makes a plan to murder her, which goes terribly wrong.
Dileep is a successful businessman with a dark side. He prey on nubile girls, assaults and kills them. These proceedings are video-recorded and watched by his adoptive father and mentor. He meets Sarada, and is attracted to her. She wants to marry him to have his way. Later she finds a diary containing details of his deranged life and, and names of the girls he had killed scribbled on the walls of one of the rooms in his large house.
Dilip, a photographer, gets involved with a group of three supermodels on an international tour. Other models sent abroad seem to be dead, and when the cycle repeats, Dilip is suspected.
Two friends, Bhaskar and Seenu, accidentally release Jee-Boom-Baa, a genie from an old urn. Jee-Boom-Baa promises to help his new masters as they set him free.
Ram Kumar, a psychopath, kills whoever learns about his wrongdoings. However, when Devi marries him, she senses something fishy with his activities and investigates with the help of her friend Raj.
Raja, an atheist, is constantly at a war of wits with his brother who is a firm devotee of a god man. When tragedy strikes, disturbing facts are revealed, leaving everyone shocked.
After a prostitute ruins Chandru's family, he develops a strong aversion towards them. His childhood trauma creates unrest in his present life as he starts killing sex workers whenever he sees them.
C Kalayana Raman comes to a village to do his research work. However, he finds himself entangled in the case of Latha, a woman who died under mysterious circumstances.
Vijay Kumar, a detective, goes undercover to investigate the mysterious murders in Ponvel village. When he dies, Anand, his brother, decides to unravel the mystery behind his death.
When a rich man is murdered on a running train, Inspector Shankar tries to solve the mystery. Since Ravanan is the only passenger travelling with the deceased, he decides to help him.
After an officer is shot dead, a CID officer, Shankar, is tasked with investigating to find his colleague's killers. He soon starts unravelling the mystery behind his colleague's death.
Shankar, a CID officer, is tasked with investigating the mysterious murder of a politician. When he realises the involvement of a terrorist group, he decides to capture them.
Rajan, a radio engineer, is found dead under suspicious circumstances. CID officer Sivanandham unravels the mystery surrounding the murder and the suspects that include Rajan's wife and his brother.