We’re two episodes into the first season of Stargirl on the DC Universe app and the CW. The show has wonderfully paced and well-acted. It’s also doing a good job of balancing the past and the future. In this TVLine-exclusive preview, we get another glimpse of the history of the Justice Society of America. The Flash image looks like something from Alex Ross. Characters like Wildcat are about to become very important to Courtney’s story. The next episode airs Monday on the DCU app and Tuesday on the CW.