LOS ANGELES, June 15 — What is believed to be a ‘Previously On Game of Thrones’ video has leaked online ahead of the release of the Season 5 Finale of the hit HBO series, and may reveal massive spoilers the final episode of the season, Huffington Post reported today.

HBO’s German Sky website allegedly posted the video, which has since been taken down, which may reveal key points of the final episode, but fans have uploaded a copy of the almost 2-minute clip on YouTube, said to show a character that has not appeared since the first season.

It is not clear if the video was fan-made, as Huffington Post wrote that HBO could not be reached for comment at the time of writing.

Other fans have leaked images said to be from the actual finale on Imgur (features spoilers).