Like the rest of the cast, Headey is keeping secrets of the final season, although Sophie Turner openly admits to spoiling the ending for some people.
Very little footage from Season 8 has released, and the showrunners have said that they’re not big fans of trailers.
Unfortunately — and unsurprisingly — Lena Headey didn’t drop any details about what exactly Cersei is doing in the final scene she filmed, or in any of Cersei’s other scenes.