I'll bet you keep piranhas in your goldfish bowl, too! 
Secret Six #1 is an issue of the series Secret Six (Volume 1) with a cover date of May, 1968. It was published on March 1, 1968.
Synopsis for "Code Name: Mockingbird"
Six strangers are pulled from their personal lives to do the bidding of an unknown masked individual, known only as 'Mockingbird', who apparently has information on each of them that would ruin their lives and livelihoods. The manipulator, however, is set on using each of their skills to be the undoing of a madman named Zoltan Lupus, who has developed a weapon that removes the oxygen from the air, killing all in the infected area. The six would-be teammates, August Durant, a scientist, Carlo di Rienzi, an escape artist, Crimson Dawn, a model, King Savage, a Hollywood stuntman, Lili de Neuve, a world-reknowned make-up artist and beautician, and Tiger Force, a former world-class boxer, are taken aboard a plane which is auto-piloted to a base where they receive their instructions from a tape recorder. This makes the group suspicious that this Mockingbird could be one of themselves. The group inserts themselves onto Lupus' private island and begin their plan to destroy the machine and take Lupus prisoner. They are able to destroy the machine using cooperation, but Lupus flees for safety but finds himself in the testing area for his weapon and becomes its final victim.
Appearing in "Code Name: Mockingbird"
Featured Characters:
- Secret Six (First appearance)
Supporting Characters:
- Mockingbird (First appearance)
Antagonists:
- Zoltan Lupus (Dies) (First appearance)
Other Characters:
Locations:
- New York City
- Lupus' private island
Items:
Vehicles:
Notes
- First appearance of all characters.
- This issue is reprinted in The Brave and the Bold #117.
Trivia
- This issue is unique in that the cover doubles as the splash page.