Black Lightning 3x13 Promo “The Book of Markovia: Chapter Four“ (HD) Season 3 Episode 13 Promo

Black Lightning 3x13 “The Book of Markovia: Chapter Four“ Season 3 Episode 13 Promo - WAYNE BRADY (“WHOSE LINE IS IT ANYWAY?”) GUEST STARS IN THE EPISODE – Black Lightning (Cress Williams) and his team descend upon Markovia on a mission to rescue Lynn (Christine Adams) who finds herself in even more trouble when she meets Gravedigger (guest star Wayne Brady, “Whose Line Is It Anyway?”), a metahuman on the Markovian side. Nafessa Williams, China Anne McClain, James Remar, Damon Gupton, Marvin Jones III and J