Hope Lauren

A stand-off ensues between the DEO and Astra's forces; Kara tries to refute Cat's allegations that she is Supergirl and Non, Astra's husband, kidnaps Hank.

Kara offers to help Winn when his homicidal father breaks out of prison. Alex convinces Hank to get inside Lord Industries.

A twisted version of Supergirl tries to destroy Kara; Cat's son (Blake Jenner) and Kara become closer.

A Man to Share the Night With: When Michelle Kwan comes in second place at the Olympics, Jessica tries to keep it from Emery and Evan. Louis changes Eddie's bedtime, hoping to spend more quality time together watching Letterman. (S4, E14)

Halloween chaos takes over the ED; Asher helps a pregnant woman with an autistic son; Charles clashes with Nurse Jackie on a psych case.

Maggie and Goodwin's friendship is tested as tensions rise during the nurses' union's negotiations with the hospital; Ripley and Archer treat a skateboarder struck by an emergency vehicle; Frost helps a young boy abandoned by his mother.