Detective Comics #351
| Writer | Henry Boltinoff, Gardner Francis Fox, Jack Schiff |
| Artist | Henry Boltinoff, Carmine Infantino, Sheldon Moldoff |
Batman and Robin battle the Cluemaster; meanwhile, Aunt Harriet discovers the secret entrance to the Batcave. The Elongated Man wants to donate his old costume to Central City's Flash Museum, but it's been stolen.