Data courtesy of the Grand Comics Database under Creative Commons license.

Issue Details

Issue #73
Published April-May 1970
Cover Price 0.15
Pages 36
Editing Murray Boltinoff
Notes 1) The cover trumpets "The NEW Challengers of the Unknown", new being occult. 2) Learn more about the Challengers at www.challengersoftheunknown.com.

Cover Details - "The Curse of the Killer Time Forgot!"

Characters Ace Morgan; Rocky Davis; Prof Haley; Red Ryan; Corinna Star;, Machu
Genre Adventure
Pencils Nick Cardy
Inks Nick Cardy
Notes 1) The cover trumpets "The NEW Challengers of the Unknown", new being occult. 2) Learn more about the Challengers at www.challengersoftheunknown.com.

23 page Challengers of the Unknown story "The Curse of the Killer Time Forgot"

Characters Challengers of the Unknown [Ace Morgan; Rocky Davis; Prof Haley; Red Ryan; Corinna Stark]; Machu; Major Cheever.
Synopsis A space capsule plunks in the Atlantic, but the astronaut is strangled, killed in outer space! "Call the Challengers!" They've got their own problems. Red and Rocky fight over Corinna, and Prof feels useless recuperating from earlier wounds. At Cape Canaveral, they meet Major Cheever, a moon-walking astronaut. Corinna gets "weird vibes", wanders off, and gets locked in an airlock. Rocky breaks her free. Corinna holds a seance and summons a pink alien-ghost named Machu who lives on the moon! A live grenade interrupts. Who's sabotaging them? Ace, Corinna, Red, and Major Cheever make the next moon flight. (Rocky's too big for a spacesuit.) In space, Machu appears as Major Cheever pulls a gun! Cheever allied with Machu, who was left as a guardian to prevent men from venturing into space. But Machu thought all men evil, and now sees some are good. He forces Cheever to shoot himself, then dissipates. Ace pilots them home.
Genre Adventure
Script Denny O'Neil
Pencils George Tuska
Inks George Tuska

2 page filler "A Flash of Memory"

Genre Mystery; Thriller
Script Murray Boltinoff
Pencils Dick Dillin
Inks Vince Colletta