Tom Waite

Sydney begins to form an opinion that Jack's suspicious activities led to the death of her mother 20 years earlier, creating an even deeper tension between them.

Will searches for the person responsible for revealing information to him about SD-6; Dixon becomes suspicious of Sydney's activities; Sloane awaits the news of his wife's fate.

Kara's Thanksgiving may be ruined when she suspects her foster mother, Dr. Eliza Danvers (special guest star Helen Slater), who is coming to town, disapproves of her new role as a super hero. Also, when an accident transforms a volatile CatCo employee into the villainous Livewire, she targets Cat Grant and Supergirl. Brit Morgan guest stars as Leslie Willis/Livewire.