After his first appearance in a 10 page story in Mystery Comics Digest #5, Dr. Spektor was spun off into his own title, The Occult Files of Doctor Spektor. The series ran for 25 issues (May 1973 - May 1982), the final issue a reprint of #1. Jesse Santos replaced Speigle as artist on the series, and remained there for the entire run.

Dr. Spektor appeared in four issues of Gold Key's Spine-Tingling Tales, where he provided linking narration for the stories within. He also appeared in one issue of Gold Key Spotlight (August 1977), which was his last original appearance.

Doctor Adam Spektor is an occult investigator, dealing with various occult menaces, such as mummies (Ra-Ka-Tep), vampires (Baron Tibor, Dracula), werewolves, and more. He is aided by Lakota Rainflower, his Sioux secretary (until issue #22), along with several semi-recurring assistants (Elliot Kane in issue #4, future love interest Lu-Sai in issues #12 and #24, his cousin Anne Sara in issue #17). Several of the monsters he encounters return in subsequent issues, and for several issues, Spektor became a werewolf (#11-13).

Spine Tingling Tales #1	Spine Tingling Tales #2	Spine Tingling Tales #3	Spine Tingling Tales #4