Detective Comics, Vol. 1

The Million Dollar Debut of Batgirl - Barbara Gordon has put together a "Batgirl" outfit for the policeman's ball. While en route, she spots Killer Moth's men assaulting Bruce Wayne, and steps forward into her new life as a crimefighter.

Riddle of the Sleepytime Taxi - Ralph and Sue are en route to a costume party when they fall asleep in the cab. When Ralph realizes that the cab they woke up in is different from the cab they slept in, he goes on the case and investigates a spy ring.