John thinks about life after the LAPD. Lydia connects with a man she sent to Death Row. And Sammy becomes a tabloid celebrity after a very public act of heroism.

The day's events bring all of our cops face to face with some of their greatest fears. The death of a baby shakes Lydia to her core.

November, 2006. Two Police officers are summoned to a hospital in London to interview a man named Alexander Litvinenko, who claims to have been poisoned.

When Riggs and Murtaugh attend Leo Getz's surprise wedding, they end up investigating a missing person. Then, Riggs comes face to face with someone from his past and Murtaugh receives news that might change his life forever.

Pope's ex-wife exposes his past relationship with Brenda.

Brenda and the LAPD face off against Fritz and the FBI.

With the final clue in hand, Jane attempts to gather the remaining Red John suspects in one place in hopes of finally revealing his identity.

November, 2006. Two Police officers are summoned to a hospital in London to interview a man named Alexander Litvinenko, who claims to have been poisoned.

Forced to cease operations while under investigation by Internal Affairs, Intelligence goes off-book to bring down Reid once and for all. Ruzek and Burgess consider delaying their nuptials amid the uncertainty.

When Riggs and Murtaugh attend Leo Getz's surprise wedding, they end up investigating a missing person. Then, Riggs comes face to face with someone from his past and Murtaugh receives news that might change his life forever.

Brenda and the LAPD face off against Fritz and the FBI.

With the final clue in hand, Jane attempts to gather the remaining Red John suspects in one place in hopes of finally revealing his identity.

November, 2006. Two Police officers are summoned to a hospital in London to interview a man named Alexander Litvinenko, who claims to have been poisoned.

John and Lucero settle into their new friendship during a day filled with strange calls. While Ben and Sammy respond to an insane bank robbery call.

John thinks about life after the LAPD. Lydia connects with a man she sent to Death Row. And Sammy becomes a tabloid celebrity after a very public act of heroism.

The day's events bring all of our cops face to face with some of their greatest fears. The death of a baby shakes Lydia to her core.

When Riggs and Murtaugh attend Leo Getz's surprise wedding, they end up investigating a missing person. Then, Riggs comes face to face with someone from his past and Murtaugh receives news that might change his life forever.

Forced to cease operations while under investigation by Internal Affairs, Intelligence goes off-book to bring down Reid once and for all. Ruzek and Burgess consider delaying their nuptials amid the uncertainty.

Brenda and the LAPD face off against Fritz and the FBI.

With the final clue in hand, Jane attempts to gather the remaining Red John suspects in one place in hopes of finally revealing his identity.

November, 2006. Two Police officers are summoned to a hospital in London to interview a man named Alexander Litvinenko, who claims to have been poisoned.

After a break-in turns into a homicide, Murtaugh and Riggs set out to find the culprit. Murtaugh and Trish question their trust in Riana as she gets into trouble with friends. Meanwhile, Riggs recalls his troubling childhood and finds a true family with Molly and Ben.

Maggie and Frost fight to get a pair of lungs for a young cystic fibrosis patient. Hannah learns whether she can become a surrogate. Ripley and Morris treat the daughter of a tech billionaire battling leukemia.

Goodwin is tasked with enforcing difficult cuts to hospital personnel. Charles' daughter is hospitalized after a car accident. A transplant patient makes a life-changing decision.

Alec and Marisa attend a wedding of the daughter of a mutual friend that’s located inside a foreign embassy, where the father of the bride has been ensconced for diplomatic reasons. Their night off quickly turns into a murder investigation.

Simon’s mother asks Alec to help stop a suicide contagion when a third student death strikes the campus. Alec ask Marisa to help when he thinks there might be more to the case.

Following the shocking events at Jane's house, the Red John list is narrowed down further, and the CBI's priority is the remaining suspects.