| Issue | #56 |
| Published | February 1967 |
| Frequency | bi-monthly |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Pat Masulli (Executive Editor); Dick Giordano (Managing Editor) |
| Characters | Thunderbolt [Peter Cannon] |
| Genre | superhero |
| Pencils | Pete Morisi |
| Inks | Pete Morisi |
| Characters | Thunderbolt [Peter Cannon]; Tabu; The Cobra (dies in this story) Flashback cameos: The Hooded One; Evila; Gore, the Man-Ape; the Tong; The Mummy (all from Thunderbolt's previous cases) |
| Synopsis | After looking at his old cases files that Tabu has been keeping, Thunderbolt stops a slave ring ran by a man named the Cobra. The Cobra uses a mind control potion he invented in order to keep his victims compliant. |
| Genre | superhero |
| Script | Pete Morisi [as PAM] |
| Pencils | Pete Morisi [as PAM] |
| Inks | Pete Morisi [as PAM] |
| Letters | typeset |
| Letters | typeset |
| Notes | Letters of comment from readers Larry Good; Jerry Clark; Bill Greenhouse; Bill Martin. |
| Characters | Sentinels [Helio [Rick Strong]; Mentalia [Cindy Carson]; Brute [Crunch Wilson]]; Ed (a tv show host); The Protestors [Rick Strong; Cindy Carson; Crunch Wilson]; The Colonel (the Protestors' agent); The Titan |
| Synopsis | After their gig as the hot singing group "The Protestors" on Ed's show, the Sentinels are challenged to battle by an inhumanly strong android named the Titan. |
| Genre | superhero |
| Script | Gary Friedrich (signed) |
| Pencils | Sam Grainger (signed) |
| Inks | Sam Grainger (signed) |
| Notes | Although not named as such, Ed is really Ed Sullivan. |