|Location of Publication||New York, New York|
|Story Location||Europe: Latveria: Doomstadt, Castle Doom|
|Notes||Reprinted Issue: |
Fantastic Four Vol 1 #84, March, 1969
The Invisible Girl is not present in this story because she is on a leave of absence from the team after she gave birth to her son in Fantastic Four Annual #6.
Dum Dum Dugan's appearance here is a complicated one. As revealed in Original Sins #5 Dugan was seemingly killed in action back in 1966 and it was suggested that he was replaced by a complex LMD that thought it was Dugan. However as revealed in New Avengers Vol 4 #17, Dugan's body was kept alive and his mind was transmitted into LMDs.
Doctor Doom was revealed as ruler of Latveria in Fantastic Four Annual #2. His conquest of that country was depicted in Books of Doom #5-6.