Michael Albala

A new doctor at Seattle Grace puts others on edge; Arizona struggles with phantom limb pain; Meredith is faced with her worst fear.

The International Response Team investigates when two American flight attendants go missing in Singapore.

Emily continues to delicately weave her way back into the Graysons' lives while keeping her ties to Amanda and her unborn child.

Kate struggles with her feelings in the aftermath of Toby's heart attack. As William begins to spend more time with Jesse, Randall has to get used to his father's new relationship. After receiving the news they're expecting triplets, Jack and Rebecca must find a way to afford a home that can accommodate three babies. Olivia unexpectedly resurfaces, throwing both Kevin and Sloane for a loop.

Kara faces off against her mirror image when Bizarro (guest star HOPE LAUREN), a twisted version of Supergirl, sets out to destroy her. Also, Kara grows closer with Cat's son, Adam.

With Astra in captivity at the DEO, her husband, Non (recurring guest star CHRIS VANCE), captures Hank, leading to a tense standoff between the two sides. Also, Kara continues to refute Cat's allegations that she is Supergirl.