I’ve always believed Claire (a character in Lost) died in the destruction of her house by the rocket attack in the episode The Shape of Things to Come. But we also saw her stumbling our of the wreckage, seemingly unharmed. I just re-watched a clip from that show and a little later in the episode we see this exchange:
John Locke: “Clare?”
Sawyer: “You alright, sweetheart?”
Claire: “Yeah. A bit wobbly, but I’ll live.”
Miles: “I wouldn’t be too sure about that.”
As we all know Miles has a keen sense about dead people. It’s this type of foreshadowing that makes me such a fan of the show. But it could also be seen as the opposite of foreshadowing. Mile is telling Claire that her situation is more dire than the others.