- Script:
- Gerry Conway
- Pencils:
- Gil Kane
- Inks:
- Steve Mitchell; Frank Giacoia (flashback art); John Romita (flashback art)
- Colors:
- ?
- Letters:
- John Costanza
- Job Number:
- 764Z
- Genre:
- Superhero
- Characters:
- Spider-Man [Peter Parker]; X-Men [Professor X [Charles Xavier]; Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Iceman [Bobby Drake]; Angel [Warren Worthington III]; Hank McCoy [Beast]]; Harry Osborn; Professor Hans Jorgenson; Human Torch [Johnny Storm] (flashback; cameo); Lizard [Dr. Curt Connors] (flashback; cameo); Dr. Michael Morbius (fourth appearance; villain)
- Synopsis:
- Spidey has been injected with the deadly Morbius serum and he and the X-Men have to quickly take down the Living Vampire to save old Webhead's life.
- Reprinted:
- in Marvel Treasury Edition (Marvel, 1974 series) #18 (1978)
- in Spider-Man Megazine (Marvel, 1994 series) #4 (January 1995)
- in Marvel Tales (Marvel, 1966 series) #234 (February 1990)
- in Marvel Masterworks: The X-Men (Marvel, 2003 series) #7
- in Essential Classic X-Men (Marvel, 2006 series) #3 [black & white]
- in Essential Marvel Team-Up (Marvel, 2002 series) #1 [black & white]
- in Marvel Masterworks: Marvel Team-Up (Marvel, 2010 series) #1
Frank Giacoia and John Romita inks are from the flashback art.
- Script:
- Stan Lee; ?
- Letters:
- typeset
Stan Lee editorial regarding Phase Two at Marvel Comics. Marvel checklist for comics dated September 1972.
- Script:
- ?
- Letters:
- typeset
Letters from readers - David McDonnell, Joseph Randisi, Jr., Nancy O'Brien, B. Lobe and Rick Keefe.