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.

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.

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 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.

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.