During the scene where Caligula cuts the unborn baby from Drusilla's womb a brief shot was filmed showing the bloody fetus. The episode had already been re-edited twice before, and a third time on the day it was to go out. The shot was still included in the initial BBC showing on the 8th and the rerun two days later, but edited out of the master copy afterwards. Therefore, once the studio tapes with the raw footage had been wiped, the shot was lost: The BBC no longer had a copy of it (although it's possible someone recorded the original cut of the episode at home on one the two occasions it aired in November 1976). From 1977 onwards, all repeats and releases showed only Claudius looking, and the footage of what he saw was no longer there.