Marvel's Greatest Comics : Fantastic Four #67
"Within This Tortured Land"
Unable to leave Latveria, the Fantastic Four find themselves unwilling guests of Latverian hospitality. However, after Doom has to deal with two dissident citizens who try to catch Doom off guard, he orders the slaughter of the entire village by Servo-Guards as punishment.
In order to insure that the Fantastic Four do not attempt to stop this slaughter, he has them drugged, and, while they are unconscious, they are mentally conditioned to believe that they have lost their powers.
They are also conditioned into abhorring violence of any kind. While Doom has a portrait painted of himself, he orders the robots to storm the city and kill everyone in it, including the Fantastic Four.
Estimated Condition: FN/VF (Used)