It seems Game of Thrones actor Sean Bean let the cat out of the bag a little early, in regards to a planned reunion special with host Conan O’Brien. The actor—who is perhaps not as trained at keeping secrets as the co-stars who survived him on the HBO series—let slip to The Hollywood Reporter last month that he taped the special earlier this year in Belfast, along with other cast members old and new.

At the time, HBO would not confirm the special existed—but now, a new report from Entertainment Weekly may reveal why. The special, it turns out, does in fact exist—but will be a little tricky for fans to get their hands on.

Conan O’Brien did indeed host a look back at the series that will feature Bean, a number of current cast members, and, likely, past stars like Jason Momoa (Khal Drogo), Mark Addy (Robert Baratheon), and Kerry Ingram (Shireen). However, this special will not be airing on HBO at all. It won’t even air on O’Brien’s home network of TBS. Instead, the reunion will be a bonus feature in a new Game of Thrones box set, which is coming out in 2019. In other words, fans may have to pay through the nose to see it at all.

The sure-to-be-costly home-video collection will package all eight seasons of the series together along with, undoubtedly, several new special features in addition to the Conan O’Brien reunion. Unconfirmed rumors about the nature of the reunion special and other DVD extras have been swirling online for months.

This, perhaps, is why HBO was loath to confirm the existence of the reunion last month. Likely, the network wanted to time the news of the reunion to the announcement of the box set. But as far as leaked spoilers go, Sean Bean could have done much, much worse than this.