Marium Carvell

Griff completes his proctorship and prepares to make his official return to surgery; hospital board chairwoman Tina Kingsley makes a stunning announcement; the surgical team prepares for a high-stakes lung transplant.

As Sam, Griff and Vivian face the fallout from Griff’s bombshell confession to the hospital board, the surgical team preps for a rare high-profile surgery that could take Sam’s career to the next level. Also, Lex confronts Griff about his betrayal, and Malcolm sets his sights on his mother’s board seat.

Dr. Sam Griffith (Sophia Bush) fights to keep her new leadership role as chief of surgery when her father and former boss, Dr. Rob "Griff" Griffith (Jason Isaacs), takes his case for reinstatement directly to the hospital board. Also, resident Dr. Caleb Tucker (Michael Stahl-David), Sam's ex, forms an unexpected connection to a patient battling a mystery condition.

When Dr. Sam Griffith tracks down a deep-pocketed anonymous hospital donor, she's shocked to discover why the donor is so loyal to her father, Griff. Also, Griff offers to mentor his daughter and assure her succession.

When a gunshot victim is rushed to the ER, the incident triggers flashbacks to the aftermath of Griff's own shooting, and reveals new details of how the people in his life were affected during the six months he was in a coma.