The detectives investigate when a woman, Janis Donovan, suffering from multiple personality disorder may have fatally abused her daughter. As Benson and Stabler look into the case, Dr. Carlisle assists as Donovan continues to expose different personalities, which leads to a twist in the case. Now, the detectives are in a race against time to find the infant before it's too late.

After Kristi McGarrett is raped by her sister's boyfriend, Dan Friedich, her sister, Rachel, disappears. Friedich is the detectives' top suspect and Benson and Stabler must use Rachel's avatar to find her before it's too late.

A 15-year-old boy, Shane Mills, contracts a sexually transmitted disease and claims he got it from his teacher, Sarah Trent, who seduced him. But when Sarah claims Shane raped her, Benson and Stabler begin an investigation that uncovers dark secrets.

Corrine Nicholson is beaten badly and ends up in a coma. The only witness to the crime is Corrine and her husband Ben's daughter, Katie. However, Katie is mentally challenged and the detectives hesitate in having her testify. Together, Benson, Stabler and Dr. Huang work with Katie to put the pieces together.

A teacher at a private school is found stabbed to death. The detectives link the murder to a victim's center where the teacher was working with an Iraqi man. Could exposed military secrets be the reason the teacher was murdered?

A college student is murdered in her formal wear, and the detectives find that the murder is a copycat of notorious serial killer Robert Morton. The case becomes more complex when the last person to see the girl alive, Cecilia, mysteriously disappears herself. In a race against time to find Cecilia before it's too late, the detectives must find Morton in order to solve the case.

Novak must confront a past ghost while working on a schizophrenic rapist case.

An ultimate fighter's DNA found at the scene of a teenage girl's murder may make him a prime suspect. Yet more evidence may lean towards two brothers involvement in the crime.

The case of a murdered nanny leads detectives to her online love interest, but her employers also fall under suspicion when infidelity is uncovered. Meanwhile, Stabler's unborn son is in serious danger after a family tragedy.

A polygamist's wife is murdered and the man believes that her death is related to a criminal case in which he testified. However, the detectives soon find that it may be due to his lifestyle instead.

A charismatic yet violent leader of a homeless group is suspected by the detectives of murdering a wealthy Manhattan teen. But the investigation unearths other evidence that leads them to believe he may be responsible for the deaths of his own children and first wife.

Benson begins working with an FBI agent familiar with a serial killers profile when another body is found in Central Park as its latest victim. The agent has a special interest in the case after her mentor committed suicide when he was unable to solve the case.

The naming of a suspect in the sexual assault case of a young Jewish boy uncovers a disturbing pattern when more victims come forward. But the boy’s religious community hampers the case by keeping quiet and protective of their own and by a grandstanding defense lawyer who uses the case to further her own agenda.

A race to recover fertilized embryos before they expire has Benson and Stabler racing around after a sperm bank is robbed. The list of suspects is extensive, but all signs point to a pair of publicity seeking extremists, while Benson realizes she may be waiting to long to become a mother herself.

Ashley Tyler is found raped and badly beaten at a local garden, Benson and Stabler’s first suspect is her well-known drug-dealing uncle, Rick Tyler. After the rape kit with crucial evidence identifying the rapist vanishes, detectives begin to suspect a prison guard may have a role in the investigation. Benson puts her life on the line as she goes undercover as an inmate to catch the rapist.

An investment banker's death leads to the agent of a pro football quarterback who seemed to be having an affair with the victim. Meanwhile, Benson's dating of a newspaper editor causes a conflict with her position at the department.

An engineer, Martin Rook, proves to be a dangerous man after posing as a police officer on the telephone, tricking people into committing crimes. Rook cleverly gets himself freed from jail, throwing publicity his way and gaining followers with his anti-authority message.

An attorney hampers an attempted interview with a wealthy member of a coffee trade family, who's pregnant fiance was found in a house fire raped and beaten. As they dig further into the evidence they discover family secrets, including an affair between the victim and her would be father-in-law.

Lake is made the prime suspect after opening a cold case and being shot at by the detective who had originally worked up the case, which left him dead and Lake in a hospital. Later, Lake flees from the hospital and takes the only witness as a hostage.