- Script
- Steve Gerber
- Pencils
- Sal Buscema
- Inks
- Vince Colletta
- Colors
- Don Warfield
- Letters
- Gaspar Saladino (page 3); June Braverman; typeset (page 9)
- Genre
- superhero
- Characters
- The Defenders [Valkyrie; Hulk [Bruce Banner]; Nighthawk [Kyle Richmond]; Doctor Strange [Stephen Strange]]; Elena; Elena's baby; Sons of the Serpent; Aragorn; Yellowjacket [Dr. Hank Pym]; Wong; Clea; Jack Norriss; Harold Holliman
- Synopsis
- Sons of the Serpent reveal their agenda and battle the Defenders, capturing Dr. Strange, Valkyrie, Yellowjacket and Nighthawk.
- Reprints
Jack Norris name changed to Jack Norriss in this and all subsequent issues.
- Script
- Steve Gerber (replies)
- Letters
- typeset
- First Line of Dialogue or Text
- Dear Marvel, Defenders #20, coupled with...
- Genre
- superhero
- Reprints
Letters of comment from readers Dean Mullaney and Mary McGeehan.
Placed between pages 12 and 13 of the main sequence.
Also contains Marvel Value Stamp Series A #78 (the Owl).