Tim Drake watches Batman and Robin capture The Joker! When "The Clown Prince of Crime" destroys his own air traffic jamming device, the explosion blows debris across to where Tim is. Debris including a Batarang! Tim's dad works for Two-Face. He expects Tim to follow in his footsteps into the "family business". Tim's dad runs out to escape the law. Both Two-Face and Batman catch up to him. Tim rescues Batman and ends up on a ride back to the Batcave in the Batboat. Ever resourceful, Tim learns Batman's secret identity.
