As the rookies prepare for a big exam to see who moves on to the next stage of training, Nolan and Bishop are called to the scene of a murder and learn that the victim may be tied to a potential terrorist attack on the city of Los Angeles.

Sgt. Gray informs the rookies that they must track down a specific set of crimes in a 48-hour period to qualify for their final exam; Nolan and Bishop answer a silent alarm call at will.i.am's house.

When a cop is arrested by Internal Affairs for lying on the witness stand, it leads to the release of three felons whose cases he worked on; Officer Nolan finds out he is being sued by a man who claims he used excessive force which led to an injury.

A massive earthquake rocks the city and throws everything into chaos; Russo recommends Officer Nolan for a protective detail of Brad Hayes, a man whose dealings have put a target on his head.

Officer Nolan gets a lesson in respect after his arrest of a gang member leads to a free-for-all on his life; officer Chen and Bradford pull over Mario Lopez, who thinks he can talk his way out of a traffic violation.

When a prison bus crashes, some inmates face severe injuries while others seek an opportunity to flee; in the wake of the accident, officer Nolan tries to impress an FBI hostage negotiator while tracking down an escaped convict.

The rookies are really put to the test when they are forced to make all decisions while on patrol; officer Nolan tries to prove he has been progressing faster than the other rookies to justify his desire of becoming a detective within five years.

The rookies become the prime suspects after a large sum of money used in a drug bust goes missing.

The team is on high alert during the most dangerous day of the year, Valentine's Day; officer Nolan invites everyone over for a party now that he is single.

An unscheduled visit by the vice president of the United States puts the station on high alert; the Secret Service tasks Nolan and Bishop with checking out a possible threat while the rest of the team tries to keep the streets safe for his visit.

Officer Nolan and Sgt. Grey are paired up for the day on patrol; Officer Chen is paired up with Capt. Andersen, and Officer Bradford tells Chen to protect her at all costs.

Officer Bradford's wife is found shot but alive, and he vows to track down the man responsible; Officer Nolan must protect his home and the truth after a home invasion attack.

Nolan and Bishop respond to a silent alarm call at a local convenience store where two men are attempting to rob the place; Bishop helps coordinate a drug bust.

Sgt. Grey informs officer Nolan and officer Bishop that they are going to have a movie director as a ride-along; officer Bradford learns that his wife has been arrested for drug possession.

The team must help capture a cop and his former mentor from the academy after he becomes a fugitive following an assault; Officer Tim Bradford needs Officer Lucy Chen to learn to predict the moves of criminals in order to capture them.

Nolan, the rookies and their training officers get involved in a competition that pits them against each other; officer Lucy Chen notices officer Tim Bradford is obsessed with winning at all costs.

The rookies are temporarily paired with new training officers; when Nolan and Lopez track down an escaped criminal, they discover a little kindness goes a long way; Jackson is forced to face his fears when he is partnered with officer Bradford.

After Nolan and Talia lose control of a crime scene, they begin to debate whether people are fundamentally good or bad; Lucy worries Tim is enabling his wife's destructive behavior and not taking care of himself.

Talia forces Nolan to confront his personal moral instincts after he encounters a kidnapping victim; Lucy is temporarily placed with a new training officer who tests her patience; Jackson must confront his failures head-on.

After a life-altering incident, John Nolan decides to pursue his dream of becoming a police officer; as the force's oldest rookie, John is met with skepticism from some higher-ups.

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.

Rebooting the hit movie franchise of the same name, "Lethal Weapon" is set in modern-day Los Angeles, where Detective Roger Murtaugh works a crime-ridden beat. Some of Murtaugh's colleagues at the LAPD include Detective Bailey, Capt. Brooks Avery, and a pathologist named Scorsese. Murtaugh, a married father of three, finds himself working with Detective Wesley Cole, a former international CIA operative who has been everywhere and seen everything. Cole must adjust to life on the West Coast while navigating his partnership with Murtaugh.

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.

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.