Is a spoiler still a spoiler if you don’t know it’s a spoiler? Well, depending on your answer to that question, then this article may or may not contain spoilers. And interestingly enough, they’re coming from a prominent cast member of ‘Game of Thrones’.

Anyone who watched this past Sunday’s episode titled ‘The Mountain and the Viper’ is probably still in shock from the final moments that saw Gregor Clegane literally crush Oberyn Martell in a trial by combat that determined the life of Tyrion Lannister. But if you’ve been following Lena Headey on Instagram, you might have gotten a glimpse into the future. About two months ago, the actress who plays Cersei Lannister posted the following picture on the popular photo-sharing social media app that seemingly foreshadow the fate of the Red Viper of Dorne:

At the time, people probably thought that they were just looking at a playful picture of Headey and co-star Pedro Pascal, but now fans are looking for deeper meanings in her posts. For instance, another picture from a few months ago is in question because it potentially alludes to a possible upcoming development on the popular HBO fantasy drama based on George R.R. Martin’s ‘A Song of Ice and Fire’ novels. Check it out below:

If you haven’t read the books, you’re probably wondering why a heart made of rocks would be important to ‘Game of Thrones’. Well, Nerd Bastards points out that this picture could hint at an appearance from Lady Stoneheart this season. While the name may not sound familiar, even fans that only follow the show will recognize the character as she was formerly known as Catlyn Stark. In the novels, Lady Stark is brought back to life after the Red Wedding by Lord Beric Dondarrion, who gives up his own life in the process of resurrection. Then, the undead matriarch of House Stark takes over leadership of the Brotherhood Without Banners and swears vengeance on everyone involved in the mass murder from last season. Rumor has it that this reveal will be the huge cliffhanger of the fourth season, but with the series playing around with the timelines, we’ll see what happens.

What do you think about Lena Headey’s Instagram posts? Do you think that she’s been subtly dropping ‘Game of Thrones’ spoilers? And what are your thoughts on Lady Stoneheart potentially making her debut before this season ends? Share your thoughts and theories in the comment section.

‘Game of Thrones’ airs Sundays at 9:00pm on HBO.