Officer Cooper gets a new partner -- Jessica Tang; and Lydia has a new partner as well -- Ruben Robinson,

Tang and Cooper are attacked on the street, while Lydia and Ruben question the unassuming grandmother of a murder suspect. The force gets a new captain.

The Shop offers Nikita and her team freedom. Sam contemplates an opportunity to recoup his losses. Michael comes face to face with an old adversary, Ramon.

A young gang member dies with Provenza's card in his pocket.

Sharon Raydor makes good use of a highly unreliable witness.

A teenage girl vanishes while volunteering at a shelter.

Major Crimes investigates the world of "barely legal" porn.

When a congressman's aide is found dead after testifying in a corruption case, Shaw and Riley discover the suspect may be someone close to home.

When Julian Webb is unexpectedly found dead at the home he shares with his wife Dena, evidence at the scene points towards suicide. As the detective delves into the couple’s relationship, he discovers that Dena’s first husband, Lee Wyatt.

A young gang member dies with Provenza's card in his pocket.

A teenage girl vanishes while volunteering at a shelter.

Major Crimes investigates the world of "barely legal" porn.

The Shop offers Nikita and her team freedom. Sam contemplates an opportunity to recoup his losses. Michael comes face to face with an old adversary, Ramon.

Officer Cooper gets a new partner -- Jessica Tang; and Lydia has a new partner as well -- Ruben Robinson,

Tang and Cooper are attacked on the street, while Lydia and Ruben question the unassuming grandmother of a murder suspect. The force gets a new captain.

When a congressman's aide is found dead after testifying in a corruption case, Shaw and Riley discover the suspect may be someone close to home.

A young gang member dies with Provenza's card in his pocket.

Sharon Raydor makes good use of a highly unreliable witness.

A teenage girl vanishes while volunteering at a shelter.

Major Crimes investigates the world of "barely legal" porn.

The Shop offers Nikita and her team freedom. Sam contemplates an opportunity to recoup his losses. Michael comes face to face with an old adversary, Ramon.

When Julian Webb is unexpectedly found dead at the home he shares with his wife Dena, evidence at the scene points towards suicide. As the detective delves into the couple’s relationship, he discovers that Dena’s first husband, Lee Wyatt.

Shaw and Riley investigate the death of a prominent chef when he's stabbed in his own restaurant. Price has hesitations about prosecuting the defendant after new evidence comes to light.

Ripley struggles to keep Sully’s diagnosis a secret when the latter’s pregnant girlfriend comes to Med for help. Loren works to earn a spot in Med’s trauma fellowship. Charles and a medical student treat a bipolar artist.

Cormack invites Sam to examine the contents of Zoe’s backpack and probe her memory for clues. Sam clocks a Jacobs Family Construction flyer with the word Sapphire written on it in Zoe’s handwriting.

When an acclaimed tennis player goes missing in a remote forest, Alec is called to help find her and bring her to safety. However, a medical emergency threatens to sideline Alec, leaving Marisa and Rose to race against time and rescue the woman.

Just as Nikita is finally starting to see an end to the long war with the Shop, Ryan confesses a secret that could unravel it all.