Dispatcher Melanie McCavish and the team ramp up into all hands on deck when a barrage of shots fired calls come in at the same time, including a call from the person who’s been shot.

Whitney Ridder, a beautiful young woman who seems to have everything, disappears from her wealthy fiancé's home during the middle of a dinner party.

Jack and the team search for a brilliant but complicated 14-year-old Russian violinist, Natasha Tzetcovich, who disappeared after a rehearsal for an important concert appearance.

While Tang gets an update about the boy she shot, John wants her to come clean about what really happened. Ben tries to intervene in the life of a prostitute, but makes things worse.

Capt. Raydor accompanies Brenda on a case.

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.

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.

Patrick Jane and the CBI team investigate when the body of a high-end luxury car sales woman is found in the trunk of a Bentley in the dealership's showroom.

While Tang gets an update about the boy she shot, John wants her to come clean about what really happened. Ben tries to intervene in the life of a prostitute, but makes things worse.

Nancy ties the knot! But first, the team must piece together the puzzle of a possible kidnapping.

Dispatcher Melanie McCavish and the team ramp up into all hands on deck when a barrage of shots fired calls come in at the same time, including a call from the person who’s been shot.

Capt. Raydor accompanies Brenda on a case.

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.

Patrick Jane and the CBI team investigate when the body of a high-end luxury car sales woman is found in the trunk of a Bentley in the dealership's showroom.

While Tang gets an update about the boy she shot, John wants her to come clean about what really happened. Ben tries to intervene in the life of a prostitute, but makes things worse.

Jack and the team try to find a priest, Father Henry Stephens, who disappears from his church shortly after learning that he needs a liver transplant to survive.

Whitney Ridder, a beautiful young woman who seems to have everything, disappears from her wealthy fiancé's home during the middle of a dinner party.

Jack and the team search for a brilliant but complicated 14-year-old Russian violinist, Natasha Tzetcovich, who disappeared after a rehearsal for an important concert appearance.

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.

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.

Patrick Jane and the CBI team investigate when the body of a high-end luxury car sales woman is found in the trunk of a Bentley in the dealership's showroom.

While Tang gets an update about the boy she shot, John wants her to come clean about what really happened. Ben tries to intervene in the life of a prostitute, but makes things worse.

The holiday season screeches to a halt when six members of the Anderson family are discovered to have been gunned down in their home. Detectives work closely with family friends to track down the shocking murderer.

Pascal and Severide revisit the storage facility fire in hopes of uncovering new evidence. Cruz helps Mouch take his studying to the next level.

Herrmann and Mouch prepare to take their officer exams. Cruz receives a chilling omen. Carver takes care of a dog after its owner is injured on a call.

Tal's distractedness and frustrations lead to an unexpected outburst that threatens his career and his marriage. Mariah uses her husband to chase a new lead.

With an astronaut trapped in space, Alec is tapped to evaluate whether the pair of astronauts assigned to rescue them – a married couple – can safely complete the mission.

When a member of Cho's former gang, the Avon Park Playboys, is found murdered, Patrick Jane insists on helping Cho with his off-the-books investigation.