The Clash of Heroes and the Secret Society!, Part One is the fifty episode of Batman: The Brave and the Bold.
January 28, 2011. 3-part episode
Batman and Captain Marvel thwart 2 bank robbers from stealing diamonds. In the end, Captain Marvel's sister Mary Bromfield is telling him that he's missing his adopted parents' anniversary.
Billy misses his parents' anniversary, Unaware that Black Adam has returned and plans to murder his adopted parents, and Scream Queen assists him by torturing the two Marvel relatives. Meanwhile, Batman and Firestorm try to stop Poison Ivy, KGBeast, and the Rogues (Mirror Master, the Top, Weather Wizard, Pied Piper, and Heat-Wave) from destroying Fawcett City.