The investigation into the murder of a neighborhood do-gooder reveals he was planning on exposing something big.

The team steps in when multiple women are targeted during a murder spree at a Miami sorority.

The team investigates the murder of a skydiver with more than 100 children, all of them suspects.

Horatio uncovers a scandal that pits him against a former adversary; Calleigh faces a life-altering decision.

Calliegh uncovers a personal connection to a case involving the near-death of a popular tennis coach.

When the Miami Taunter strikes again, Horatio meets with the matriarch of the suspected killer's family.

A killer uses an unusual, high-tech weapon to murder a genius billionaire.

The team investigates the murder of the mother of a very young beauty-pageant contestant.

The team investigates the murders of convicted killers after their release from prison.

The team is baffled when a masked assassin kills a poker player during a high-stakes game.

A maid's bloodless body is found in a mansion, hanging from a chandelier, with bites on her neck.

Horatio must protect a Mexican police chief from the unknown assassin responsible for her husband's death.

The team pursues a killer who takes the eyes from victims; a new adversary challenges Horatio.

Evidence is damaged and Ryan and Walter are put in danger when a tornado tears through a murder scene.

The CSIs investigate the death of a college student whose body was found in a hot tub.

Horatio must protect a mixed-martial-arts fighter from the guy's brother, a prison escapee.

An escaped prisoner takes Natalia hostage and reveals shocking secrets about his crimes.

As Natalia and Horatio's lives hang in the balance, the team tries to catch an escaped killer.

When the transport plane carrying a fugitive crash-lands, the CSIs learn the criminal is planning more than just an escape.

When Horatio tracks down a mysterious murder suspect, he discovers the man's life is a charade.

The team tries to find a connection between the murders of a truck driver and a woman on his delivery route.

A dedicated group of forensic investigators at the Las Vegas Crime Lab works to solve often-grisly crimes in Sin City. Heading up the graveyard shift (an appropriate term in this case) is supervisor D.B. Russell, a "Left Coast" Sherlock Holmes who devours crime novels. Members of Russell's team include Julie Finlay, Nick Stokes, Sara Sidle (the team's moral compass), Greg Sanders and Morgan Brody. The investigative team works closely with Capt. Jim Brass -- a seasoned detective who is a protector of CSI -- Dr. Al Robbins -- medical examiner -- and quirky lab technician David Hodges. Previous leaders of the group include Gil Grissom and Dr. Ray Langston.

An elite squad of FBI profilers analyzes the country's most-twisted criminal minds, anticipating the perpetrators' next moves before they can strike again. Each member of the "mind hunter" team brings his or her expertise to pinpoint predators' motivations and identify emotional triggers to stop them. The core group includes an official profiler who is highly skilled at getting into the minds of criminals, a quirky genius, the former media liaison who manages to adeptly balance family life and the job, and a computer wizard.

"Without a Trace" is a fast-paced procedural drama about the Missing Persons Squad of the Federal Bureau of Investigation in New York City. The sole responsibility of the special task force is to find missing persons by applying advanced psychological profiling techniques to the evidence and decide whether the missing people have been abducted, murdered, committed suicide or simply run away. Members of the unit include supervisory agent Jack Malone (Anthony LaPaglia) and field agent Samantha "Sam" Spade (Poppy Montgomery).

Naval Criminal Investigative Service Special Agent Leroy Jethro Gibbs leads a group of colorful personalities in investigating crimes -- ranging from murder and espionage to terrorism -- that have evidence connected to Navy and Marine Corps personnel. The team includes witty ex-homicide detective Anthony DiNozzo, quirky forensics specialist Abby Sciuto, and the brilliant -- if insecure -- Timothy McGee. Dr. Donald "Ducky" Mallard brings his vast experience in forensics into play to help solve cases.

Dr. Temperance Brennan, a forensic anthropologist who works at the Jeffersonian Institution and also writes books, has an impressive ability to read clues from victims' bones. Consequently, law enforcement calls her to assist with investigations when remains are so badly decomposed, burned or destroyed that standard identification methods are useless. Brennan is teamed with Special Agent Seeley Booth, a former Army sniper, who mistrusts science and scientists when it comes to solving crimes but who has developed respect for Brennan, both professionally and personally.

This groundbreaking series from Executive Producer Dick Wolf's "Law & Order" franchise chronicles the ripped-from-the-headlines investigations of the NYPD's Special Victims Unit. Led by courageous and compassionate Lieutenant Olivia Benson, this elite team includes Detectives Odafin Tutuola, Amanda Rollins and Sonny Carisi, who focus on finding justice for the victims of the city's worst crimes. Assisting them is ADA Peter Stone, who seeks justice for SVU's victims and survivors with precision and a passion to win.

This series is largely remembered for the stylish clothes Detectives Sonny Crockett and Ricardo Tubbs wore, the soundtrack, and its distinct visuals. But beneath the veneer is a surprisingly dark cop show. The cocaine boom of the 1980s framed many stories about drugs and murder, with Crockett and Tubbs often resorting to violence in the course of their work.