* This story may contain spoilers.
Lena Headey's Instagram account is under scrutiny after fans of Game of Thrones spotted an innocent-looking photo of a heart made from stones that might be a huge spoiler.
The English actress, 40, plays Cersei Lannister in the hit HBO series. But when she posted the image below with the caption "my stone heart", the rumour mill went into meltdown.
Those who have read George RR Martin's original A Song of Ice and Fire novels know that the symbol could be a not-so-subtle reference to forthcoming character Lady Stoneheart (a zombified Catelyn Stark).