Sins of the Mother - S1.E5

Barbara and Helena learn the truth about Dinah and Dinah learns the truth about her own past when her mother, Carolyn Lance, comes to New Gotham in search of the daughter she abandoned years before. Dinah is shocked to learn that Carolyn was once Batman's protege, Black Canary. Meanwhile, Helena learns that Detective Reese has family issues of his own when he becomes secretive about a ruthless gangster.