In addition to publishing anthology stories, the magazine starred Morbius the Living Vampire, in a feature written primarily by Don McGregor, with pencilers including Pablo Marcos, Rich Buckler, Tom Sutton, and Mike Vosburg, and later by Doug Moench, with artist Sonny Trinidad. The vampire hunter Blade starred in two stories by writer Marv Wolfman and artist Tony DeZuniga, in issue #8-9 (Dec. 1974 - Feb. 1975). Steve Gerber contributed a Morbius, the Living Vampire story to the first issue and Lilith stories to issues #10-11.
Issue #2 (Oct. 1973) introduced Satana, the Devil's Daughter, in a four-page teaser by writer-editor Roy Thomas and artist John Romita Sr.; and detective Hodiah Twist, created by Don McGregor and penciler Carlos Garzon.
Stories reprinted from Marvel's 1950's predecessor Atlas Comics included pre-Comics Code work by such artists as Bill Everett and Carmine Infantino. Modern reprints included writer-artist Jim Steranko's "At the Stroke of Midnight" from Tower of Shadows #1, and the 11-page Morbius origin sequence from The Amazing Spider-Man #102.
Writer Ron Goulart and Roy Thomas and artist Win Mortimer adapted the seminal vampire short story "The Vampyre", by John Polidori, in issue #1. Other adaptations included writer Don McGregor and artist Vicente Alcazar's "Bat's Belfry" and writer Tony Isabella and artist Esteban Maroto's "The Drifting Snow", both from August Derleth stories.
Published bi-monthly, the magazine cost 75 cents, a typical price for the time.
The 1975 annual reprinted seven stories from the magazine.