Bruce Wayne checks into the private hospital Graytowers to recover from injuries he sustained fighting Dr. Phosphorus, but he soon discovers that Hugo Strange is using the facility to turn the rich and influential patients into his mindless slaves. When Strange sics a venomous snake on Batman, which knocks the hero out, Strange uncovers Batman's secret identity.; Hugo Strange, who has taken over Bruce Wayne's life, offers to sell the Batman's secret identity to the highest bidder. But Boss Thorne doesn't want to play that game, and tries to beat the information out of Strange. Meanwhile, Silver, who suspects something is wrong with "Bruce," summons Dick Grayson, who rescues Batman from Strange's captivity as Robin.