This series has no issues #1 to #14. At this time, Yaffa generally did not start series at #1, possibly to imply the titles continued from earlier series by other publishers. However, the numbers generally do not form a continuous sequence. Previously, Atlas published Secret Agent X9 #1-#9 and Phil Corrigan Secret Agent X9 #10-#31.
Most issues of this series include the subtitle "of the FBI".