Grey's Anatomy Shooting Timeline: from Gary Clark's Arrival to the Final Stand

Take a closer look at Grey's Anatomy Shooting Timeline: from Gary Clark's Arrival to the Final Stand with our latest coverage.

The tension peaks in Episode 24 when Clark corners Derek Shepherd on the open elevated walkway. Derek nearly succeeds in de-escalating the situation, explaining the burden of making impossible medical choices. However, April Kepner bursts through the doorway, startling Clark. The shooter pulls the trigger, hitting Derek in the chest right in front of an agonized Meredith Grey.

Derek is rushed into an operating suite where Cristina Yang, assisted by Jackson Avery, takes command of the emergency thoracotomy. With no senior cardiothoracic attending available, the second-year resident is forced to repair her best friend's husband's heart. Halfway through the operation, Clark breaches the OR with his weapon raised, ordering Cristina to step back and let Shepherd die.

Meredith rushes into the operating theater, pleading with Clark to shoot her instead, arguing that killing her would hurt Richard, Derek, and Lexie simultaneously. Owen Hunt intervenes and lunges at Clark, but is shot in the shoulder. While Clark is momentarily distracted, Jackson Avery devises an audacious deception: he quietly disconnects the cardiac leads from Derek's chest. The monitor drops to a flatline. Believing Shepherd has expired, Clark exits the room, allowing Cristina and Jackson to immediately reconnect the bypass monitors and successfully finish repairing Derek's heart.

Simultaneously, in an adjacent wing, Miranda Bailey and patient Mary Portman (played by Mandy Moore) spend grueling hours attempting to save Charles Percy. Bailey applies manual pressure to Percy's severe abdominal wound and attempts to transport him to an OR. When they reach the elevator bank, Bailey realizes the power grid to the lifts was cut off to secure the building. Unable to move the dying resident down multiple flights of stairs, Bailey cradles Percy on the floor until his pulse fades, delivering one of the most devastating scenes in the show's run.

In a nearby room, Meredith treats Owen Hunt's gunshot wound alongside April Kepner. Under the relentless physiological stress of the siege, Meredith realizes she is suffering a miscarriage. She continues suturing Hunt's shoulder wound without pause, refusing to stop working despite the quiet heartbreak unfolding within her own body.