To those like me who thought this was a haunted house flick where the ghost is actually, effectively, under the sheet the whole time:

With A Ghost Story, acclaimed director David Lowery (Ain’t Them Bodies Saints, Pete’s Dragon) returns with a singular exploration of legacy, loss, and the essential human longing for meaning and connection. Recently deceased, a white-sheeted ghost (Academy Award-winner Casey Affleck) returns to his suburban home to console his bereft wife (Academy Award-nominee Rooney Mara), only to find that in his spectral state he has become unstuck in time, forced to watch passively as the life he knew and the woman he loves slowly slip away. Increasingly unmoored, the ghost embarks on a cosmic journey through memory and history, confronting life’s ineffable questions and the enormity of existence. An unforgettable meditation on love and grief, A Ghost Story emerges ecstatic and surreal—a wholly-unique experience that lingers long after the credits roll.

From A24's website.