The series premiered in
1955*. Stopped in 1965 after 51 issues*.
The series contains a mixture of horror, science
fiction, and weird suspense in self-contained stories.
Initially, the series was published in several runs beginning in
Fawcett Comics from 1952 (5 issues). Then Charlton took over
from 1954 (7 issues) followed by another run (this one) ending
with a series lasting from 1967 to 1969 (9 issues).