I am rereading The Dark Tower series and this text caught by eye.
It was a haunting line. For a moment the gunslinger felt mixed feelings of nostalgia and fear, stitched in with an eerie feeling of déjà vu, and he thought: I dreamed this. Or I was here before. If so, when? Not Mejis. No, not there. He shook the feeling off. The audience—perhaps twenty-five all told—had become dead silent. Every eye touched the preacher-woman.
The Gunslinger, Chapter 12
Is it his memory coming back or just a sense of déjà vu?