A difficult surgery brings back pivotal memories for Meredith, Richard, Owen and Stephanie, as they work together to save a life.

When a lottery winner is admitted to the hospital, Bell turns to him as a potential solution to Chastain's financial problems. Nic becomes infuriated when Alec suggests she meet with an organ broker in hopes of saving Jessie's life, but after her other ideas fail, she brings the idea to Conrad. Meanwhile, Devon and Irving help Mina piece together details from her night out after The Raptor sidelines her for an upcoming surgery.

Andy, Jack and 18 other candidates take the captaincy drill test, gunning for one spot as captain of Station 19. Meanwhile, Travis is serving as acting captain while Andy and Jack are away for the day; and Ben confronts Vic about her fears.

Gabrielle and Victor will make an unexpected twist in their relationship and will also face a crisis as a video of them sharing a passionate moment in an elevator was caught on tape and is now being used to blackmail them. Edie gets into a fight with one of the ladies that will ruin their "friendship" while another lady on Wisteria Lane ends up in the hospital.

Susan goes to the therapist and realizes she must choose between Ian and Mike. Travers is having a birthday party which only spells trouble for Mrs. McCluskey, Gabrielle's engagement party is upstaged by an unexpected announcement and the neighborhood is full of gossip about the dead body found on Wisteria Lane.

When the hospital has a severe blood shortage, Conrad must try every avenue to save a patient's life. Nic receives devastating news and is left worrying about her sister's health, while Mina and Devon work with a new anesthesiologist who is not what she seems. Elsewhere, Kit considers the future of her intertwining relationships and Bell has an encounter with a woman from his past.

Meredith and Bailey are at odds when both of their patients need a liver transplant, Owen seeks help from the other doctors when he is charged with babysitting baby Harriet for the day, and Amelia struggles with telling Owen some important news.

Grey Sloan sees the return of a familiar face; Catherine puts on the pressure, forcing Bailey to make a decision about Alex; Amelia faces a tough case at the ER.

Gabrielle and Victor will make an unexpected twist in their relationship and will also face a crisis as a video of them sharing a passionate moment in an elevator was caught on tape and is now being used to blackmail them. Edie gets into a fight with one of the ladies that will ruin their "friendship" while another lady on Wisteria Lane ends up in the hospital.

Susan goes to the therapist and realizes she must choose between Ian and Mike. Travers is having a birthday party which only spells trouble for Mrs. McCluskey, Gabrielle's engagement party is upstaged by an unexpected announcement and the neighborhood is full of gossip about the dead body found on Wisteria Lane.

Melinda and Jim's trip is interrupted as Melinda helps the ghost of a woman who left her husband and young daughter. Before the woman can cross over Melinda must find the woman’s daughter and help her to learn the truth about her parent’s past.

When a lottery winner is admitted to the hospital, Bell turns to him as a potential solution to Chastain's financial problems. Nic becomes infuriated when Alec suggests she meet with an organ broker in hopes of saving Jessie's life, but after her other ideas fail, she brings the idea to Conrad. Meanwhile, Devon and Irving help Mina piece together details from her night out after The Raptor sidelines her for an upcoming surgery.

The arrival of a new consultant puts the doctors on edge; Amelia and Owen bring their personal problems into the hospital; April explores some unfamiliar territory.

A difficult surgery brings back pivotal memories for Meredith, Richard, Owen and Stephanie, as they work together to save a life.

Susan goes into the woods to try to find Mike. Gabrielle gets into an argument with a meter man who gives her a ticket. Victor is elected mayor, and Gabrielle goes back to teach the meter man a lesson. Edie's ex-husband comes back to collect Travers. Lynette realizes she has feelings for another man.

While Tom tries to save his marriage, Mike and Susan get engaged. However, Susan's happiness is short-lived when she realizes Gabrielle has stolen her cancelled wedding with Ian. Meanwhile, Edie wants Carlos to move in with her, and she's ready to do anything to make it happen.

Andy, Jack and 18 other candidates take the captaincy drill test, gunning for one spot as captain of Station 19. Meanwhile, Travis is serving as acting captain while Andy and Jack are away for the day; and Ben confronts Vic about her fears.

The team needs to quickly figure out how to treat the virus when more and more people are becoming ill and dying.

When a city-wide outbreak of a mysterious and lethal virus occurs, even Megan and her team are at risk. In order to determine who and what caused this outbreak, CDC Officer Charlie Stafford takes over the investigation.

Melinda and Jim's trip is interrupted as Melinda helps the ghost of a woman who left her husband and young daughter. Before the woman can cross over Melinda must find the woman’s daughter and help her to learn the truth about her parent’s past.

When a man with a troubled past is killed under mysterious circumstances, Morgan and the LAPD uncover a tragic motive behind his death. Meanwhile, Morgan opens up to Ava about her father, forcing Ava to confront truths she isn’t ready to face.

The team needs to quickly figure out how to treat the virus when more and more people are becoming ill and dying.

Melinda and Jim's trip is interrupted as Melinda helps the ghost of a woman who left her husband and young daughter. Before the woman can cross over Melinda must find the woman’s daughter and help her to learn the truth about her parent’s past.

Andy, Jack and 18 other candidates take the captaincy drill test, gunning for one spot as captain of Station 19. Meanwhile, Travis is serving as acting captain while Andy and Jack are away for the day; and Ben confronts Vic about her fears.

As Gabrielle prepares for her fairy tale wedding, Bree returns to Fairview with a surprise. Meanwhile, Lynette's mother Stella pays her a visit after finding out Lynette has cancer. Finally, Susan and Mike tie the knot in an unexpected location.

The neighborhood is shocked when news about Edie's suicide attempt spreads though Fairview. Lynette battles with the effects of chemotherapy. After a decade of absence, Katherine Mayfair moves back to Wisteria Lane with her new husband and daughter in her late teens.

Believing he is going to jail tomorrow, Alex makes a big decision about his future. While the hospital is overrun with victims of a building collapse, Richard demands answers from Bailey about Eliza's presence at Grey Sloan.