A blunder caused Sky+ boxes to cut off the final 30 minutes of the season finale for fans who recorded the show.
The lapse left fans desperately scrambling to find out whether CIA official Peter Quinn would assassinate Sergeant Nicholas Brody.
The finale of the US thriller series attracted in the region of 388,000 viewers when it was aired at RTE Two on Tuesday night.
However thousands of fans are believed to have tried to watch the episode in the hours afterwards through their Sky boxes.
It's believed that the error occurred as a result of the finale lasting longer than previous episodes.
Sky apologised to viewers and RTE has also offered an explanation for the blunder, with the station claiming that the tape of the programme was longer than it had expected.
It is understood that UPC also suffered a similiar issue. The company pointed out to fans the episode "over ran its advertised schedule" but highlighted that the episode will be repeated on Channel 4 on Sunday".
Meanwhile, Homeland star, Claire Danes and her husband Hugh Dancy are celebrating the birth of their first child, Cyrus Michael Christopher. It's not known yet whether Danes (33) will attend the Golden Globe Awards on January 13, where she is nominated for Best Actress in a Television Series.