Supergirl airs Mondays at 8pm ET; Arrow airs Wednesdays at 8pm ET.
LENA IS ARRESTED – After Metallo (guest star Frederick Schmidt) breaks out of prison and frees Lillian Luthor (guest star Brenda Strong), the police blame Lena (guest star Katie McGrath) for his escape and arrest her. Despite overwhelming evidence, Kara (Melissa Benoist) refuses to believe her friend is guilty and fights to clear Lena’s name. Flashbacks reveal how Lena came to be a Luthor. Meanwhile, Alex (Chyler Leigh) and Maggie (Floriana Lima) celebrate their first Valentine’s Day together. Tawnia McKiernan directed the episode written by Robert Rovner and Cindy Lichtman.
Arrow "Spectre of the Gun"
WILD DOG’S HISTORY IS REVEALED — A traumatic attack on City Hall triggers painful memories for Rene (Rick Gonzalez) about his family. Flashbacks reveal how Rene went from simple family man to a hero named Wild Dog. Meanwhile, Oliver (Stephen Amell) must deal with the perpetrator behind the attack and realizes the best way to do so is as Mayor Queen instead of the Green Arrow. Tensions run high in the Arrow bunker. Kristin Windell directed the episode written by Marc Guggenheim.