[4] While attending classes, he began working in 1940 as an assistant of Harry Lampert,[4] co-creator of All-American Comics' Golden Age superhero the Flash.

Craig's story "... And All Through the House" in Vault of Horror #35 (March 1954) was adapted for the Joan Collins segment of the 1972 omnibus film Tales from the Crypt.

Senator Estes Kefauver asked EC publisher Bill Gaines whether he thought the cover, depicting an ax-wielding man holding a woman's severed head, was in good taste.

[7] Ironically, Craig was one of the more wholesome EC artists, frequently choosing to show the reactions of characters rather than the horrific event itself.

The scripts he wrote tended to be literate and cerebral, and generally relied on solid construction and implacable internal logic, rather than on contrived snap endings.

His horror work made more use of psychology and mood than of the supernatural, and his crime comics owed more to James M. Cain and Cornell Woolrich than to gangster movies.

Recalling the excellence of his EC stories, editor George Kashdan gave him an issue of The Brave and the Bold to draw — a Batman/Hawkman team-up.

Craig handed the job in weeks late, whereupon his art was deemed too subdued, even for the relatively staid DC super-hero comics of the time.

[1] After penciling and inking Iron Man #2 and a supernatural story in Tower of Shadows #1, heavily retouched by John Romita Sr., Craig became primarily an inker.