Detective 245 – Batman teams with Mysteryman
Edmond Hamilton and Sheldon Moldoff create a decent little mystery, with a good role for Vicki Vale, in Detective 245 (July 1957).
A gang of smugglers have been plaguing Gotham, and the mayor insists that Commissioner Gordon turn the case over to Batman. But Batman feels he needs help on this, and turns to Mysteryman.
Vicki Vale is consumed by curiosity, and spends the story testing Mysteryman in a variety of ways, trying to determine if he is a robot, or Superman, but always striking out. Even Alfred is kept in the dark about his identity.
In the end, Vicki sneaks into the trunk of the Batmobile, and when Mysteryman is dropped off at his home, she realizes it is Commissioner Gordon in the disguise.
She exposes him the next day, and Batman explains to the mayor that Gordon had done all the groundwork on the case, and Batman didn’t want him left out of the loop when the gang was rounded up.
Vicki realizes Batman used her to expose Gordon and give him the credit he deserved, but is more than happy to have been part of it all.