Nolan's discovery goes much deeper than he expected and could put his life and career in jeopardy.

Officers Nolan, Chen and West are squeezed harder than ever before as their training officers evaluate whether they are truly ready for the job; one of the rookie classmates is involved in a shooting.

Officers Nolan and Harper escort four juvenile offenders to a Scared Straight program at a correctional facility, but it quickly becomes a riotous situation; Nolan is uncertain about Grace after she fails to introduce him to her ex-husband.

Officer Nolan's relationship with his first confidential informant is tested when he discovers her back on the street dealing drugs; Lucy's fear of dating following her abduction is beginning to threaten her friendship with Jackson.

Officers Chen and Bradford respond to a call at the Los Angeles auditions of "American Idol" and Officer Chen ends up facing Ryan Seacrest and the judges; Chen befriends a reporter whose motives are not clear.

Bored with his success, celebrated mystery novelist Rick Castle teams with NYPD Detective Kate Beckett to solve the case of a copycat killer who re-creates murder scenes from Rick's novels. While solving the case, the two realize that their unorthodox partnership has its benefits and decide to continue working together. Combining his writer's intuition with her creative detective work, they investigate strange homicides in New York, all the while building a strong, if complicated, relationship with each other.

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 Capt. Olivia Benson, this elite team includes Sgt Odafin Tutuola, Detective Amanda Rollins and Officer Katriona Tamin, who focus on finding justice for the victims of the city's worst crimes. Assisting them is ADA Sonny Carisi, who seeks justice for SVU's victims and survivors with precision and a passion to win.

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.

CBS books a new version of the classic "Hawaii Five-0" series, with Alex O'Loughlin in the lead role as Detective Steve McGarrett and Scott Caan portraying Danno. The detectives are part of an elite task force whose mission is to eliminate crime on the beaches of the Aloha State. Assisting McGarrett and Danno are Capt. Lou Grover, who formerly headed Hawaii's SWAT unit; Jerry Ortega, the islands' local conspiracy theorist; and Tani Rey, a bold, recent police academy graduate. The brash unit spar and jest among themselves but remain determined to eliminate the seedy elements from the nation's 50th state.

Tom Selleck stars as Frank Reagan, the New York Police Commissioner, and patriarch of the Reagan clan, a multigenerational family of cops. Frank's oldest son is Danny, a seasoned detective and Iraqi War veteran who occasionally uses dubious tactics to solve cases. Daughter Erin, the lone female, is an assistant district attorney. Fresh out of Harvard Law, Jamie is the youngest member and "golden boy" of the family. Jamie gave up a lucrative future in law to continue the family's tradition in police work, and is asked to participate in a secretive investigation that even his father does not know about.

NYPD detectives of the Major Case Squad use unconventional methods to solve crimes. Like its predecessor, the original "Law & Order," its storylines are often based on real-life headlines, and it features a cadre of quirky cops whose mission it is to find the criminals and make them pay.

When "The Closer" came to a close, doors opened for the detectives in the Los Angeles Police Department's Major Crimes Division, with the biggest opportunity presented to Capt. Sharon Raydor. The captain is now the boss, taking over a department that hasn't forgotten her history of internal investigations targeting them and their former boss, Deputy Chief Brenda Leigh Johnson. As Raydor attempts to mend fences and gain the trust and confidence of her detectives -- her biggest foe in that regard is Lt. Provenza -- she leads a unit that works more closely than Johnson ever did with other police and prosecutors to build airtight cases.