Actress, writer, producer and activist Erika Alexander (Living Single) has been cast in a recurring role in the upcoming second season of The CW/WBTV hit drama Black Lightning. She will play Perenna, a therapist with telepathic abilities who is trying to help Jennifer (series star China Anne McClain) acclimate to her manifesting powers and the emotions that go along with them. Alexander is currently slated to appear in three episodes.