Michael Albala

Louis must bring his family on a business trip to Gator World; Jessica learns to relax; Evan's last baby tooth falls out.

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.

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.

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

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.

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