Black Lightning, "The Book of Ruin: Chapter Two." What happened to Jennifer Pierce? That's the question Black Lightning left us with last week after Gambi (James Remar) reconstituted Jennifer's physical body, which exploded in the ionosphere. To the Pierce family's surprise, actress China Anne McClain, who played Jennifer, didn't emerge from the rebirth pod once the process was done. Instead, new actress Laura Kariuki did, implying that the role of Jennifer had been recast. Thankfully, Monday night's Black Lightning wasted no time offering up an in-story explanation/theory for the actor swap. The CW superhero drama's latest installment began with Jennifer (Kariuki) being horrified when she discovered she looked completely different. From there, Gambi ran multiple tests, all of which confirmed that this was indeed Jennifer Pierce, even though her dad, Jefferson (Cress Williams), couldn't quite believe it.